diff --git a/HISTORY.txt b/HISTORY.txt
index 7bf7690e..a99b7516 100644
--- a/HISTORY.txt
+++ b/HISTORY.txt
@@ -1,5 +1,6 @@
 7.1.0:
  - Inline TOML tables for things like requests[security]!
+ - Attempt to preserve comments in Pipfiles.
 7.0.6:
  - NO_SPIN is now automatic when CI is set.
  - Additionally, vendor pip (a patched version) for doing advanced dependency resolution.
diff --git a/pipenv/project.py b/pipenv/project.py
index c176de0e..59837db4 100644
--- a/pipenv/project.py
+++ b/pipenv/project.py
@@ -7,7 +7,7 @@ import base64
 import hashlib
 
 import pipfile
-import toml
+import contoml
 
 import delegator
 from requests.compat import OrderedDict
@@ -174,7 +174,7 @@ class Project(object):
     @property
     def parsed_pipfile(self):
         with open(self.pipfile_location) as f:
-            return toml.load(f, _dict=OrderedDict)
+            return contoml.loads(f.read())
 
     @property
     def _pipfile(self):
@@ -294,16 +294,27 @@ class Project(object):
         if path is None:
             path = self.pipfile_location
 
-        for section in ('packages', 'dev-packages'):
-            for package in data[section]:
 
-                # Convert things to inline tables — fancy :)
-                if hasattr(data[section][package], 'keys'):
-                    _data = data[section][package]
-                    data[section][package] = toml._get_empty_inline_table(dict)
-                    data[section][package].update(_data)
 
-        formatted_data = format_toml(toml.dumps(data, preserve=True))
+        try:
+            formatted_data = contoml.dumps(data)
+        except RuntimeError:
+            import toml
+            for section in ('packages', 'dev-packages'):
+                for package in data[section]:
+
+                    # Convert things to inline tables — fancy :)
+                    if hasattr(data[section][package], 'keys'):
+                        _data = data[section][package]
+                        data[section][package] = toml._get_empty_inline_table(dict)
+                        data[section][package].update(_data)
+
+            formatted_data = toml.dumps(data)
+        else:
+            pass
+        finally:
+            pass
+
         with open(path, 'w') as f:
             f.write(formatted_data)
 
diff --git a/pipenv/vendor/contoml/__init__.py b/pipenv/vendor/contoml/__init__.py
new file mode 100755
index 00000000..9dba5e20
--- /dev/null
+++ b/pipenv/vendor/contoml/__init__.py
@@ -0,0 +1,48 @@
+from ._version import VERSION
+
+__version__ = VERSION
+
+
+def loads(text):
+    """
+    Parses TOML text into a dict-like object and returns it.
+    """
+    from prettytoml.parser import parse_tokens
+    from prettytoml.lexer import tokenize as lexer
+    from .file import TOMLFile
+
+    tokens = tuple(lexer(text, is_top_level=True))
+    elements = parse_tokens(tokens)
+    return TOMLFile(elements)
+
+
+def load(file_path):
+    """
+    Parses a TOML file into a dict-like object and returns it.
+    """
+    return loads(open(file_path).read())
+
+
+def dumps(value):
+    """
+    Dumps a data structure to TOML source code.
+
+    The given value must be either a dict of dict values, a dict, or a TOML file constructed by this module.
+    """
+
+    from contoml.file.file import TOMLFile
+
+    if not isinstance(value, TOMLFile):
+        raise RuntimeError("Can only dump a TOMLFile instance loaded by load() or loads()")
+
+    return value.dumps()
+
+
+def dump(obj, file_path, prettify=False):
+    """
+    Dumps a data structure to the filesystem as TOML.
+
+    The given value must be either a dict of dict values, a dict, or a TOML file constructed by this module.
+    """
+    with open(file_path, 'w') as fp:
+        fp.write(dumps(obj))
diff --git a/pipenv/vendor/contoml/_version.py b/pipenv/vendor/contoml/_version.py
new file mode 100755
index 00000000..e0f15470
--- /dev/null
+++ b/pipenv/vendor/contoml/_version.py
@@ -0,0 +1 @@
+VERSION = 'master'
diff --git a/pipenv/vendor/contoml/file/__init__.py b/pipenv/vendor/contoml/file/__init__.py
new file mode 100755
index 00000000..1aba5121
--- /dev/null
+++ b/pipenv/vendor/contoml/file/__init__.py
@@ -0,0 +1,3 @@
+
+
+from .file import TOMLFile
diff --git a/pipenv/vendor/contoml/file/array.py b/pipenv/vendor/contoml/file/array.py
new file mode 100755
index 00000000..40e5acb3
--- /dev/null
+++ b/pipenv/vendor/contoml/file/array.py
@@ -0,0 +1,40 @@
+from prettytoml.elements.table import TableElement
+from prettytoml.errors import InvalidValueError
+from contoml.file.freshtable import FreshTable
+from prettytoml import util
+
+
+class ArrayOfTables(list):
+
+    def __init__(self, toml_file, name, iterable=None):
+        if iterable:
+            list.__init__(self, iterable)
+        self._name = name
+        self._toml_file = toml_file
+
+    def append(self, value):
+        if isinstance(value, dict):
+            table = FreshTable(parent=self, name=self._name, is_array=True)
+            table._append_to_parent()
+            index = len(self._toml_file[self._name]) - 1
+            for key_seq, value in util.flatten_nested(value).items():
+                # self._toml_file._setitem_with_key_seq((self._name, index) + key_seq, value)
+                self._toml_file._array_setitem_with_key_seq(self._name, index, key_seq, value)
+            # for k, v in value.items():
+            #     table[k] = v
+        else:
+            raise InvalidValueError('Can only append a dict to an array of tables')
+
+    def __getitem__(self, item):
+        try:
+            return list.__getitem__(self, item)
+        except IndexError:
+            if item == len(self):
+                return FreshTable(parent=self, name=self._name, is_array=True)
+            else:
+                raise
+
+    def append_fresh_table(self, fresh_table):
+        list.append(self, fresh_table)
+        if self._toml_file:
+            self._toml_file.append_fresh_table(fresh_table)
diff --git a/pipenv/vendor/contoml/file/cascadedict.py b/pipenv/vendor/contoml/file/cascadedict.py
new file mode 100755
index 00000000..4e97c060
--- /dev/null
+++ b/pipenv/vendor/contoml/file/cascadedict.py
@@ -0,0 +1,56 @@
+import operator
+from functools import reduce
+from contoml.file import raw
+
+
+class CascadeDict:
+    """
+    A dict-like object made up of one or more other dict-like objects where querying for an item cascade-gets
+    it from all the internal dicts in order of their listing, and setting an item sets it on the first dict listed.
+    """
+
+    def __init__(self, *internal_dicts):
+        assert internal_dicts, 'internal_dicts cannot be empty'
+        self._internal_dicts = tuple(internal_dicts)
+
+    def cascaded_with(self, one_more_dict):
+        """
+        Returns another instance with one more dict cascaded at the end.
+        """
+        return CascadeDict(self._internal_dicts, one_more_dict,)
+
+    def __getitem__(self, item):
+        for d in self._internal_dicts:
+            try:
+                return d[item]
+            except KeyError:
+                pass
+        raise KeyError
+
+    def __setitem__(self, key, value):
+        self._internal_dicts[0][key] = value
+
+    def keys(self):
+        return set(reduce(operator.or_, (set(d.keys()) for d in self._internal_dicts)))
+
+    def items(self):
+        all_items = reduce(operator.add, (list(d.items()) for d in reversed(self._internal_dicts)))
+        unique_items = {k: v for k, v in all_items}.items()
+        return tuple(unique_items)
+
+    def __contains__(self, item):
+        for d in self._internal_dicts:
+            if item in d:
+                return True
+        return False
+
+    @property
+    def neutralized(self):
+        return {k: raw.to_raw(v) for k, v in self.items()}
+    
+    @property
+    def primitive_value(self):
+        return self.neutralized
+
+    def __repr__(self):
+        return repr(self.primitive_value)
diff --git a/pipenv/vendor/contoml/file/file.py b/pipenv/vendor/contoml/file/file.py
new file mode 100755
index 00000000..16017b99
--- /dev/null
+++ b/pipenv/vendor/contoml/file/file.py
@@ -0,0 +1,293 @@
+from prettytoml.errors import NoArrayFoundError, DuplicateKeysError, DuplicateTablesError
+from contoml.file import structurer, toplevels, raw
+from contoml.file.array import ArrayOfTables
+from contoml.file.freshtable import FreshTable
+import prettytoml.elements.factory as element_factory
+import prettytoml.util as util
+
+
+class TOMLFile:
+    """
+    A TOMLFile object that tries its best to prserve formatting and order of mappings of the input source.
+
+    Raises InvalidTOMLFileError on invalid input elements.
+
+    Raises DuplicateKeysError, DuplicateTableError when appropriate.
+    """
+
+    def __init__(self, _elements):
+        self._elements = []
+        self._navigable = {}
+        self.append_elements(_elements)
+
+    def __getitem__(self, item):
+        try:
+            value = self._navigable[item]
+            if isinstance(value, (list, tuple)):
+                return ArrayOfTables(toml_file=self, name=item, iterable=value)
+            else:
+                return value
+        except KeyError:
+            return FreshTable(parent=self, name=item, is_array=False)
+
+    def get(self, item, default=None):
+        """This was not here for who knows why."""
+
+        if item not in self:
+            return default
+        else:
+            return self.__getitem__(item)
+
+    def __contains__(self, item):
+        return item in self.keys()
+
+    def _setitem_with_key_seq(self, key_seq, value):
+        """
+        Sets a the value in the TOML file located by the given key sequence.
+
+        Example:
+        self._setitem(('key1', 'key2', 'key3'), 'text_value')
+        is equivalent to doing
+        self['key1']['key2']['key3'] = 'text_value'
+        """
+        table = self
+        key_so_far = tuple()
+        for key in key_seq[:-1]:
+            key_so_far += (key,)
+            self._make_sure_table_exists(key_so_far)
+            table = table[key]
+        table[key_seq[-1]] = value
+
+    def _array_setitem_with_key_seq(self, array_name, index, key_seq, value):
+        """
+        Sets a the array value in the TOML file located by the given key sequence.
+
+        Example:
+        self._array_setitem(array_name, index, ('key1', 'key2', 'key3'), 'text_value')
+        is equivalent to doing
+        self.array(array_name)[index]['key1']['key2']['key3'] = 'text_value'
+        """
+        table = self.array(array_name)[index]
+        key_so_far = tuple()
+        for key in key_seq[:-1]:
+            key_so_far += (key,)
+            new_table = self._array_make_sure_table_exists(array_name, index, key_so_far)
+            if new_table is not None:
+                table = new_table
+            else:
+                table = table[key]
+        table[key_seq[-1]] = value
+
+    def _make_sure_table_exists(self, name_seq):
+        """
+        Makes sure the table with the full name comprising of name_seq exists.
+        """
+        t = self
+        for key in name_seq[:-1]:
+            t = t[key]
+        name = name_seq[-1]
+        if name not in t:
+            self.append_elements([element_factory.create_table_header_element(name_seq),
+                                  element_factory.create_table({})])
+
+    def _array_make_sure_table_exists(self, array_name, index, name_seq):
+        """
+        Makes sure the table with the full name comprising of name_seq exists.
+        """
+        t = self[array_name][index]
+        for key in name_seq[:-1]:
+            t = t[key]
+        name = name_seq[-1]
+        if name not in t:
+            new_table = element_factory.create_table({})
+            self.append_elements([element_factory.create_table_header_element((array_name,) + name_seq), new_table])
+            return new_table
+
+    def __delitem__(self, key):
+        table_element_index = self._elements.index(self._navigable[key])
+        self._elements[table_element_index] = element_factory.create_table({})
+        self._on_element_change()
+
+    def __setitem__(self, key, value):
+
+        # Setting an array-of-tables
+        if key and isinstance(value, (tuple, list)) and value and all(isinstance(v, dict) for v in value):
+            for table in value:
+                self.array(key).append(table)
+
+        # Or setting a whole single table
+        elif isinstance(value, dict):
+
+            if key and key in self:
+                del self[key]
+
+            for key_seq, child_value in util.flatten_nested({key: value}).items():
+                self._setitem_with_key_seq(key_seq, child_value)
+
+            # if key in self._navigable:
+            #     del self[key]
+            #     index = self._elements.index(self._navigable[key])
+            #     self._elements = self._elements[:index] + [element_factory.create_table(value)] + self._elements[index+1:]
+            # else:
+            #     if key:
+            #         self._elements.append(element_factory.create_table_header_element(key))
+            #     self._elements.append(element_factory.create_table(value))
+
+
+        # Or updating the anonymous section table
+        else:
+            # It's mea
+            self[''][key] = value
+
+        self._on_element_change()
+
+    def _detect_toplevels(self):
+        """
+        Returns a sequence of TopLevel instances for the current state of this table.
+        """
+        return tuple(e for e in toplevels.identify(self.elements) if isinstance(e, toplevels.Table))
+
+    def _update_table_fallbacks(self, table_toplevels):
+        """
+        Updates the fallbacks on all the table elements to make relative table access possible.
+
+        Raises DuplicateKeysError if appropriate.
+        """
+
+        if len(self.elements) <= 1:
+            return
+
+        def parent_of(toplevel):
+            # Returns an TopLevel parent of the given entry, or None.
+            for parent_toplevel in table_toplevels:
+                if toplevel.name.sub_names[:-1] == parent_toplevel.name.sub_names:
+                    return parent_toplevel
+
+        for entry in table_toplevels:
+            if entry.name.is_qualified:
+                parent = parent_of(entry)
+                if parent:
+                    child_name = entry.name.without_prefix(parent.name)
+                    parent.table_element.set_fallback({child_name.sub_names[0]: entry.table_element})
+
+    def _recreate_navigable(self):
+        if self._elements:
+            self._navigable = structurer.structure(toplevels.identify(self._elements))
+
+    def array(self, name):
+        """
+        Returns the array of tables with the given name.
+        """
+        if name in self._navigable:
+            if isinstance(self._navigable[name], (list, tuple)):
+                return self[name]
+            else:
+                raise NoArrayFoundError
+        else:
+            return ArrayOfTables(toml_file=self, name=name)
+
+    def _on_element_change(self):
+        self._recreate_navigable()
+
+        table_toplevels = self._detect_toplevels()
+        self._update_table_fallbacks(table_toplevels)
+
+    def append_elements(self, elements):
+        """
+        Appends more elements to the contained internal elements.
+        """
+        self._elements = self._elements + list(elements)
+        self._on_element_change()
+
+    def prepend_elements(self, elements):
+        """
+        Prepends more elements to the contained internal elements.
+        """
+        self._elements = list(elements) + self._elements
+        self._on_element_change()
+
+    def dumps(self):
+        """
+        Returns the TOML file serialized back to str.
+        """
+        return ''.join(element.serialized() for element in self._elements)
+
+    def dump(self, file_path):
+        with open(file_path, mode='w') as fp:
+            fp.write(self.dumps())
+
+    def keys(self):
+        return set(self._navigable.keys()) | {''}
+
+    def values(self):
+        return self._navigable.values()
+
+    def items(self):
+        items = self._navigable.items()
+
+        def has_anonymous_entry():
+            return any(key == '' for (key, _) in items)
+
+        if has_anonymous_entry():
+            return items
+        else:
+            return items + [('', self[''])]
+
+    @property
+    def primitive(self):
+        """
+        Returns a primitive object representation for this container (which is a dict).
+
+        WARNING: The returned container does not contain any markup or formatting metadata.
+        """
+        raw_container = raw.to_raw(self._navigable)
+
+        # Collapsing the anonymous table onto the top-level container is present
+        if '' in raw_container:
+            raw_container.update(raw_container[''])
+            del raw_container['']
+
+        return raw_container
+
+    def append_fresh_table(self, fresh_table):
+        """
+        Gets called by FreshTable instances when they get written to.
+        """
+        if fresh_table.name:
+            elements = []
+            if fresh_table.is_array:
+                elements += [element_factory.create_array_of_tables_header_element(fresh_table.name)]
+            else:
+                elements += [element_factory.create_table_header_element(fresh_table.name)]
+
+            elements += [fresh_table, element_factory.create_newline_element()]
+            self.append_elements(elements)
+
+        else:
+            # It's an anonymous table
+            self.prepend_elements([fresh_table, element_factory.create_newline_element()])
+
+    @property
+    def elements(self):
+        return self._elements
+
+    def __str__(self):
+
+        is_empty = (not self['']) and (not tuple(k for k in self.keys() if k))
+
+        def key_name(key):
+            return '[ANONYMOUS]' if not key else key
+
+        def pair(key, value):
+            return '%s = %s' % (key_name(key), str(value))
+
+        content_text = '' if is_empty else \
+            '\n\t' + ',\n\t'.join(pair(k, v) for (k, v) in self.items() if v) + '\n'
+
+        return "TOMLFile{%s}" % content_text
+
+    def __repr__(self):
+        return str(self)
+
+
+
diff --git a/pipenv/vendor/contoml/file/freshtable.py b/pipenv/vendor/contoml/file/freshtable.py
new file mode 100755
index 00000000..f28e2f74
--- /dev/null
+++ b/pipenv/vendor/contoml/file/freshtable.py
@@ -0,0 +1,45 @@
+from prettytoml.elements.table import TableElement
+
+
+class FreshTable(TableElement):
+    """
+    A fresh TableElement that appended itself to each of parents when it first gets written to at most once.
+
+    parents is a sequence of objects providing an append_fresh_table(TableElement) method
+    """
+
+    def __init__(self, parent, name, is_array=False):
+        TableElement.__init__(self, sub_elements=[])
+
+        self._parent = parent
+        self._name = name
+        self._is_array = is_array
+
+        # As long as this flag is false, setitem() operations will append the table header and this table
+        # to the toml_file's elements
+        self.__appended = False
+
+    @property
+    def name(self):
+        return self._name
+
+    @property
+    def is_array(self):
+        return self._is_array
+
+    def _append_to_parent(self):
+        """
+        Causes this ephemeral table to be persisted on the TOMLFile.
+        """
+
+        if self.__appended:
+            return
+
+        if self._parent is not None:
+            self._parent.append_fresh_table(self)
+
+        self.__appended = True
+
+    def __setitem__(self, key, value):
+        TableElement.__setitem__(self, key, value)
+        self._append_to_parent()
diff --git a/pipenv/vendor/contoml/file/peekableit.py b/pipenv/vendor/contoml/file/peekableit.py
new file mode 100755
index 00000000..b5658a71
--- /dev/null
+++ b/pipenv/vendor/contoml/file/peekableit.py
@@ -0,0 +1,30 @@
+import itertools
+
+
+class PeekableIterator:
+
+    # Returned by peek() when the iterator is exhausted. Truthiness is False.
+    Nothing = tuple()
+
+    def __init__(self, iter):
+        self._iter = iter
+
+    def __next__(self):
+        return next(self._iter)
+
+    def next(self):
+        return self.__next__()
+
+    def __iter__(self):
+        return self
+
+    def peek(self):
+        """
+        Returns PeekableIterator.Nothing when the iterator is exhausted.
+        """
+        try:
+            v = next(self._iter)
+            self._iter = itertools.chain((v,), self._iter)
+            return v
+        except StopIteration:
+            return PeekableIterator.Nothing
diff --git a/pipenv/vendor/contoml/file/raw.py b/pipenv/vendor/contoml/file/raw.py
new file mode 100755
index 00000000..8cffdb6e
--- /dev/null
+++ b/pipenv/vendor/contoml/file/raw.py
@@ -0,0 +1,16 @@
+from prettytoml.elements.abstracttable import AbstractTable
+
+
+def to_raw(x):
+    from contoml.file.cascadedict import CascadeDict
+
+    if isinstance(x, AbstractTable):
+        return x.primitive_value
+    elif isinstance(x, CascadeDict):
+        return x.neutralized
+    elif isinstance(x, (list, tuple)):
+        return [to_raw(y) for y in x]
+    elif isinstance(x, dict):
+        return {k: to_raw(v) for (k, v) in x.items()}
+    else:
+        return x
diff --git a/pipenv/vendor/contoml/file/structurer.py b/pipenv/vendor/contoml/file/structurer.py
new file mode 100755
index 00000000..72d002cd
--- /dev/null
+++ b/pipenv/vendor/contoml/file/structurer.py
@@ -0,0 +1,116 @@
+from contoml.file import toplevels
+from contoml.file.cascadedict import CascadeDict
+
+
+class NamedDict(dict):
+    """
+    A dict that can use Name instances as keys.
+    """
+
+    def __init__(self, other_dict=None):
+        dict.__init__(self)
+        if other_dict:
+            for k, v in other_dict.items():
+                self[k] = v
+
+    def __setitem__(self, key, value):
+        """
+        key can be an Name instance.
+
+        When key is a path in the form of an Name instance, all the parents and grandparents of the value are
+        created along the way as instances of NamedDict. If the parent of the value exists, it is replaced with a
+        CascadeDict() that cascades the old parent value with a new NamedDict that contains the given child name
+        and value.
+        """
+        if isinstance(key, toplevels.Name):
+
+            if len(key.sub_names) == 1:
+                name = key.sub_names[0]
+                if name in self:
+                    self[name] = CascadeDict(self[name], value)
+                else:
+                    self[name] = value
+
+            elif len(key.sub_names) > 1:
+                name = key.sub_names[0]
+                rest_of_key = key.drop(1)
+                if name in self:
+                    named_dict = NamedDict()
+                    named_dict[rest_of_key] = value
+                    self[name] = CascadeDict(self[name], named_dict)
+                else:
+                    self[name] = NamedDict()
+                    self[name][rest_of_key] = value
+        else:
+            return dict.__setitem__(self, key, value)
+
+    def __contains__(self, item):
+        try:
+            _ = self[item]
+            return True
+        except KeyError:
+            return False
+
+    def append(self, key, value):
+        """
+        Makes sure the value pointed to by key exists and is a list and appends the given value to it.
+        """
+        if key in self:
+            self[key].append(value)
+        else:
+            self[key] = [value]
+
+    def __getitem__(self, item):
+
+        if isinstance(item, toplevels.Name):
+            d = self
+            for name in item.sub_names:
+                d = d[name]
+            return d
+        else:
+            return dict.__getitem__(self, item)
+
+
+def structure(table_toplevels):
+    """
+    Accepts an ordered sequence of TopLevel instances and returns a navigable object structure representation of the
+    TOML file.
+    """
+
+    table_toplevels = tuple(table_toplevels)
+    obj = NamedDict()
+
+    last_array_of_tables = None         # The Name of the last array-of-tables header
+
+    for toplevel in table_toplevels:
+
+        if isinstance(toplevel, toplevels.AnonymousTable):
+            obj[''] = toplevel.table_element
+
+        elif isinstance(toplevel, toplevels.Table):
+            if last_array_of_tables and toplevel.name.is_prefixed_with(last_array_of_tables):
+                seq = obj[last_array_of_tables]
+                unprefixed_name = toplevel.name.without_prefix(last_array_of_tables)
+
+                seq[-1] = CascadeDict(seq[-1], NamedDict({unprefixed_name: toplevel.table_element}))
+            else:
+                obj[toplevel.name] = toplevel.table_element
+        else:    # It's an ArrayOfTables
+
+            if last_array_of_tables and toplevel.name != last_array_of_tables and \
+                    toplevel.name.is_prefixed_with(last_array_of_tables):
+
+                seq = obj[last_array_of_tables]
+                unprefixed_name = toplevel.name.without_prefix(last_array_of_tables)
+
+                if unprefixed_name in seq[-1]:
+                    seq[-1][unprefixed_name].append(toplevel.table_element)
+                else:
+                    cascaded_with = NamedDict({unprefixed_name: [toplevel.table_element]})
+                    seq[-1] = CascadeDict(seq[-1], cascaded_with)
+
+            else:
+                obj.append(toplevel.name, toplevel.table_element)
+                last_array_of_tables = toplevel.name
+
+    return obj
diff --git a/pipenv/vendor/contoml/file/test_cascadedict.py b/pipenv/vendor/contoml/file/test_cascadedict.py
new file mode 100755
index 00000000..d692711e
--- /dev/null
+++ b/pipenv/vendor/contoml/file/test_cascadedict.py
@@ -0,0 +1,25 @@
+from contoml.file.cascadedict import CascadeDict
+
+
+def test_cascadedict():
+
+    d1 = {'a': 1, 'b': 2, 'c': 3}
+    d2 = {'b': 12, 'e': 4, 'f': 5}
+
+    cascade = CascadeDict(d1, d2)
+
+    # Test querying
+    assert cascade['a'] == 1
+    assert cascade['b'] == 2
+    assert cascade['c'] == 3
+    assert cascade['e'] == 4
+    assert cascade.keys() == {'a', 'b', 'c', 'e', 'f'}
+    assert set(cascade.items()) == {('a', 1), ('b', 2), ('c', 3), ('e', 4), ('f', 5)}
+
+    # Test mutating
+    cascade['a'] = 11
+    cascade['f'] = 'fff'
+    cascade['super'] = 'man'
+    assert d1['a'] == 11
+    assert d1['super'] == 'man'
+    assert d1['f'] == 'fff'
diff --git a/pipenv/vendor/contoml/file/test_entries.py b/pipenv/vendor/contoml/file/test_entries.py
new file mode 100755
index 00000000..25584e82
--- /dev/null
+++ b/pipenv/vendor/contoml/file/test_entries.py
@@ -0,0 +1,20 @@
+from prettytoml import parser, lexer
+from contoml.file import toplevels
+
+
+def test_entry_extraction():
+    text = open('sample.toml').read()
+    elements = parser.parse_tokens(lexer.tokenize(text))
+
+    e = tuple(toplevels.identify(elements))
+
+    assert len(e) == 13
+    assert isinstance(e[0], toplevels.AnonymousTable)
+
+
+def test_entry_names():
+    name_a = toplevels.Name(('super', 'sub1'))
+    name_b = toplevels.Name(('super', 'sub1', 'sub2', 'sub3'))
+
+    assert name_b.is_prefixed_with(name_a)
+    assert name_b.without_prefix(name_a).sub_names == ('sub2', 'sub3')
diff --git a/pipenv/vendor/contoml/file/test_peekableit.py b/pipenv/vendor/contoml/file/test_peekableit.py
new file mode 100755
index 00000000..5c053a38
--- /dev/null
+++ b/pipenv/vendor/contoml/file/test_peekableit.py
@@ -0,0 +1,12 @@
+from contoml.file.peekableit import PeekableIterator
+
+
+def test_peekable_iterator():
+
+    peekable = PeekableIterator(i for i in (1, 2, 3, 4))
+
+    assert peekable.peek() == 1
+    assert peekable.peek() == 1
+    assert peekable.peek() == 1
+
+    assert [next(peekable), next(peekable), next(peekable), next(peekable)] == [1, 2, 3, 4]
diff --git a/pipenv/vendor/contoml/file/test_structurer.py b/pipenv/vendor/contoml/file/test_structurer.py
new file mode 100755
index 00000000..b3ea4b4e
--- /dev/null
+++ b/pipenv/vendor/contoml/file/test_structurer.py
@@ -0,0 +1,41 @@
+from prettytoml import lexer, parser
+from contoml.file import toplevels
+from prettytoml.parser import elementsanitizer
+from contoml.file.structurer import NamedDict, structure
+from prettytoml.parser.tokenstream import TokenStream
+
+
+def test_NamedDict():
+
+    d = NamedDict()
+
+    d[toplevels.Name(('super', 'sub1', 'sub2'))] = {'sub3': 12}
+    d[toplevels.Name(('super', 'sub1', 'sub2'))]['sub4'] = 42
+
+    assert d[toplevels.Name(('super', 'sub1', 'sub2', 'sub3'))] == 12
+    assert d[toplevels.Name(('super', 'sub1', 'sub2', 'sub4'))] == 42
+
+
+def test_structure():
+    tokens = lexer.tokenize(open('sample.toml').read())
+    elements = elementsanitizer.sanitize(parser.parse_tokens(tokens))
+    entries_ = tuple(toplevels.identify(elements))
+
+    s = structure(entries_)
+
+    assert s['']['title'] == 'TOML Example'
+    assert s['owner']['name'] == 'Tom Preston-Werner'
+    assert s['database']['ports'][1] == 8001
+    assert s['servers']['alpha']['dc'] == 'eqdc10'
+    assert s['clients']['data'][1][0] == 1
+    assert s['clients']['key3'] == 'The quick brown fox jumps over the lazy dog.'
+
+    assert s['fruit'][0]['name'] == 'apple'
+    assert s['fruit'][0]['physical']['color'] == 'red'
+    assert s['fruit'][0]['physical']['shape'] == 'round'
+    assert s['fruit'][0]['variety'][0]['name'] == 'red delicious'
+    assert s['fruit'][0]['variety'][1]['name'] == 'granny smith'
+
+    assert s['fruit'][1]['name'] == 'banana'
+    assert s['fruit'][1]['variety'][0]['name'] == 'plantain'
+    assert s['fruit'][1]['variety'][0]['points'][2]['y'] == 4
diff --git a/pipenv/vendor/contoml/file/toplevels.py b/pipenv/vendor/contoml/file/toplevels.py
new file mode 100755
index 00000000..64038072
--- /dev/null
+++ b/pipenv/vendor/contoml/file/toplevels.py
@@ -0,0 +1,142 @@
+"""
+    Top-level entries in a TOML file.
+"""
+
+from prettytoml import elements
+from prettytoml.elements import TableElement, TableHeaderElement
+from .peekableit import PeekableIterator
+
+
+class TopLevel:
+    """
+    A abstract top-level entry.
+    """
+
+    def __init__(self, names, table_element):
+        self._table_element = table_element
+        self._names = Name(names)
+
+    @property
+    def table_element(self):
+        return self._table_element
+
+    @property
+    def name(self):
+        """
+        The distinct name of a table entry as an Name instance.
+        """
+        return self._names
+
+
+class Name:
+
+    def __init__(self, names):
+        self._names = names
+
+    @property
+    def sub_names(self):
+        return self._names
+
+    def drop(self, n=0):
+        """
+        Returns the name after dropping the first n entries of it.
+        """
+        return Name(names=self._names[n:])
+
+    def is_prefixed_with(self, names):
+        if isinstance(names, Name):
+            return self.is_prefixed_with(names.sub_names)
+
+        for i, name in enumerate(names):
+            if self._names[i] != name:
+                return False
+        return True
+
+    def without_prefix(self, names):
+        if isinstance(names, Name):
+            return self.without_prefix(names.sub_names)
+
+        for i, name in enumerate(names):
+            if name != self._names[i]:
+                return Name(self._names[i:])
+        return Name(names=self.sub_names[len(names):])
+
+    @property
+    def is_qualified(self):
+        return len(self._names) > 1
+
+    def __str__(self):
+        return '.'.join(self.sub_names)
+
+    def __hash__(self):
+        return hash(str(self))
+
+    def __eq__(self, other):
+        return str(self) == str(other)
+
+    def __ne__(self, other):
+        return not self.__eq__(other)
+
+
+class AnonymousTable(TopLevel):
+
+    def __init__(self, table_element):
+        TopLevel.__init__(self, ('',), table_element)
+
+
+class Table(TopLevel):
+
+    def __init__(self, names, table_element):
+        TopLevel.__init__(self, names=names, table_element=table_element)
+
+
+class ArrayOfTables(TopLevel):
+
+    def __init__(self, names, table_element):
+        TopLevel.__init__(self, names=names, table_element=table_element)
+
+
+def _validate_file_elements(file_elements):
+    pass
+
+
+def identify(file_elements):
+    """
+    Outputs an ordered sequence of instances of TopLevel types.
+
+    Elements start with an optional TableElement, followed by zero or more pairs of (TableHeaderElement, TableElement).
+    """
+
+    if not file_elements:
+        return
+
+    _validate_file_elements(file_elements)
+
+    # An iterator over enumerate(the non-metadata) elements
+    iterator = PeekableIterator((element_i, element) for (element_i, element) in enumerate(file_elements)
+                                if element.type != elements.TYPE_METADATA)
+
+    try:
+        _, first_element = iterator.peek()
+        if isinstance(first_element, TableElement):
+            iterator.next()
+            yield AnonymousTable(first_element)
+    except KeyError:
+        pass
+    except StopIteration:
+        return
+
+    for element_i, element in iterator:
+
+        if not isinstance(element, TableHeaderElement):
+            continue
+
+        # If TableHeader of a regular table, return Table following it
+        if not element.is_array_of_tables:
+            table_element_i, table_element = next(iterator)
+            yield Table(names=element.names, table_element=table_element)
+
+        # If TableHeader of an array of tables, do your thing
+        else:
+            table_element_i, table_element = next(iterator)
+            yield ArrayOfTables(names=element.names, table_element=table_element)
diff --git a/pipenv/vendor/iso8601/__init__.py b/pipenv/vendor/iso8601/__init__.py
new file mode 100644
index 00000000..11b1adcb
--- /dev/null
+++ b/pipenv/vendor/iso8601/__init__.py
@@ -0,0 +1 @@
+from .iso8601 import *
diff --git a/pipenv/vendor/iso8601/iso8601.py b/pipenv/vendor/iso8601/iso8601.py
new file mode 100644
index 00000000..0c149f67
--- /dev/null
+++ b/pipenv/vendor/iso8601/iso8601.py
@@ -0,0 +1,214 @@
+"""ISO 8601 date time string parsing
+
+Basic usage:
+>>> import iso8601
+>>> iso8601.parse_date("2007-01-25T12:00:00Z")
+datetime.datetime(2007, 1, 25, 12, 0, tzinfo=<iso8601.Utc ...>)
+>>>
+
+"""
+
+import datetime
+from decimal import Decimal
+import sys
+import re
+
+__all__ = ["parse_date", "ParseError", "UTC",
+           "FixedOffset"]
+
+if sys.version_info >= (3, 0, 0):
+    _basestring = str
+else:
+    _basestring = basestring
+
+
+# Adapted from http://delete.me.uk/2005/03/iso8601.html
+ISO8601_REGEX = re.compile(
+    r"""
+    (?P<year>[0-9]{4})
+    (
+        (
+            (-(?P<monthdash>[0-9]{1,2}))
+            |
+            (?P<month>[0-9]{2})
+            (?!$)  # Don't allow YYYYMM
+        )
+        (
+            (
+                (-(?P<daydash>[0-9]{1,2}))
+                |
+                (?P<day>[0-9]{2})
+            )
+            (
+                (
+                    (?P<separator>[ T])
+                    (?P<hour>[0-9]{2})
+                    (:{0,1}(?P<minute>[0-9]{2})){0,1}
+                    (
+                        :{0,1}(?P<second>[0-9]{1,2})
+                        ([.,](?P<second_fraction>[0-9]+)){0,1}
+                    ){0,1}
+                    (?P<timezone>
+                        Z
+                        |
+                        (
+                            (?P<tz_sign>[-+])
+                            (?P<tz_hour>[0-9]{2})
+                            :{0,1}
+                            (?P<tz_minute>[0-9]{2}){0,1}
+                        )
+                    ){0,1}
+                ){0,1}
+            )
+        ){0,1}  # YYYY-MM
+    ){0,1}  # YYYY only
+    $
+    """,
+    re.VERBOSE
+)
+
+class ParseError(Exception):
+    """Raised when there is a problem parsing a date string"""
+
+if sys.version_info >= (3, 2, 0):
+    UTC = datetime.timezone.utc
+    def FixedOffset(offset_hours, offset_minutes, name):
+        return datetime.timezone(
+            datetime.timedelta(
+                hours=offset_hours, minutes=offset_minutes),
+            name)
+else:
+    # Yoinked from python docs
+    ZERO = datetime.timedelta(0)
+    class Utc(datetime.tzinfo):
+        """UTC Timezone
+
+        """
+        def utcoffset(self, dt):
+            return ZERO
+
+        def tzname(self, dt):
+            return "UTC"
+
+        def dst(self, dt):
+            return ZERO
+
+        def __repr__(self):
+            return "<iso8601.Utc>"
+
+    UTC = Utc()
+
+    class FixedOffset(datetime.tzinfo):
+        """Fixed offset in hours and minutes from UTC
+
+        """
+        def __init__(self, offset_hours, offset_minutes, name):
+            self.__offset_hours = offset_hours  # Keep for later __getinitargs__
+            self.__offset_minutes = offset_minutes  # Keep for later __getinitargs__
+            self.__offset = datetime.timedelta(
+                hours=offset_hours, minutes=offset_minutes)
+            self.__name = name
+
+        def __eq__(self, other):
+            if isinstance(other, FixedOffset):
+                return (
+                    (other.__offset == self.__offset)
+                    and
+                    (other.__name == self.__name)
+                )
+            return NotImplemented
+
+        def __getinitargs__(self):
+            return (self.__offset_hours, self.__offset_minutes, self.__name)
+
+        def utcoffset(self, dt):
+            return self.__offset
+
+        def tzname(self, dt):
+            return self.__name
+
+        def dst(self, dt):
+            return ZERO
+
+        def __repr__(self):
+            return "<FixedOffset %r %r>" % (self.__name, self.__offset)
+
+
+def to_int(d, key, default_to_zero=False, default=None, required=True):
+    """Pull a value from the dict and convert to int
+
+    :param default_to_zero: If the value is None or empty, treat it as zero
+    :param default: If the value is missing in the dict use this default
+
+    """
+    value = d.get(key) or default
+    if (value in ["", None]) and default_to_zero:
+        return 0
+    if value is None:
+        if required:
+            raise ParseError("Unable to read %s from %s" % (key, d))
+    else:
+        return int(value)
+
+def parse_timezone(matches, default_timezone=UTC):
+    """Parses ISO 8601 time zone specs into tzinfo offsets
+
+    """
+
+    if matches["timezone"] == "Z":
+        return UTC
+    # This isn't strictly correct, but it's common to encounter dates without
+    # timezones so I'll assume the default (which defaults to UTC).
+    # Addresses issue 4.
+    if matches["timezone"] is None:
+        return default_timezone
+    sign = matches["tz_sign"]
+    hours = to_int(matches, "tz_hour")
+    minutes = to_int(matches, "tz_minute", default_to_zero=True)
+    description = "%s%02d:%02d" % (sign, hours, minutes)
+    if sign == "-":
+        hours = -hours
+        minutes = -minutes
+    return FixedOffset(hours, minutes, description)
+
+def parse_date(datestring, default_timezone=UTC):
+    """Parses ISO 8601 dates into datetime objects
+
+    The timezone is parsed from the date string. However it is quite common to
+    have dates without a timezone (not strictly correct). In this case the
+    default timezone specified in default_timezone is used. This is UTC by
+    default.
+
+    :param datestring: The date to parse as a string
+    :param default_timezone: A datetime tzinfo instance to use when no timezone
+                             is specified in the datestring. If this is set to
+                             None then a naive datetime object is returned.
+    :returns: A datetime.datetime instance
+    :raises: ParseError when there is a problem parsing the date or
+             constructing the datetime instance.
+
+    """
+    if not isinstance(datestring, _basestring):
+        raise ParseError("Expecting a string %r" % datestring)
+    m = ISO8601_REGEX.match(datestring)
+    if not m:
+        raise ParseError("Unable to parse date string %r" % datestring)
+    groups = m.groupdict()
+
+    tz = parse_timezone(groups, default_timezone=default_timezone)
+
+    groups["second_fraction"] = int(Decimal("0.%s" % (groups["second_fraction"] or 0)) * Decimal("1000000.0"))
+
+    try:
+        return datetime.datetime(
+            year=to_int(groups, "year"),
+            month=to_int(groups, "month", default=to_int(groups, "monthdash", required=False, default=1)),
+            day=to_int(groups, "day", default=to_int(groups, "daydash", required=False, default=1)),
+            hour=to_int(groups, "hour", default_to_zero=True),
+            minute=to_int(groups, "minute", default_to_zero=True),
+            second=to_int(groups, "second", default_to_zero=True),
+            microsecond=groups["second_fraction"],
+            tzinfo=tz,
+        )
+    except Exception as e:
+        raise ParseError(e)
diff --git a/pipenv/vendor/iso8601/test_iso8601.py b/pipenv/vendor/iso8601/test_iso8601.py
new file mode 100644
index 00000000..0d01ffbb
--- /dev/null
+++ b/pipenv/vendor/iso8601/test_iso8601.py
@@ -0,0 +1,102 @@
+# coding=UTF-8
+from __future__ import absolute_import
+
+import copy
+import datetime
+import pickle
+
+import pytest
+
+from iso8601 import iso8601
+
+def test_iso8601_regex():
+    assert iso8601.ISO8601_REGEX.match("2006-10-11T00:14:33Z")
+
+def test_fixedoffset_eq():
+    # See https://bitbucket.org/micktwomey/pyiso8601/issues/19
+    datetime.tzinfo() == iso8601.FixedOffset(2, 0, '+2:00')
+
+def test_parse_no_timezone_different_default():
+    tz = iso8601.FixedOffset(2, 0, "test offset")
+    d = iso8601.parse_date("2007-01-01T08:00:00", default_timezone=tz)
+    assert d == datetime.datetime(2007, 1, 1, 8, 0, 0, 0, tz)
+    assert d.tzinfo == tz
+
+def test_parse_utc_different_default():
+    """Z should mean 'UTC', not 'default'.
+
+    """
+    tz = iso8601.FixedOffset(2, 0, "test offset")
+    d = iso8601.parse_date("2007-01-01T08:00:00Z", default_timezone=tz)
+    assert d == datetime.datetime(2007, 1, 1, 8, 0, 0, 0, iso8601.UTC)
+
+@pytest.mark.parametrize("invalid_date, error_string", [
+    ("2013-10-", "Unable to parse date string"),
+    ("2013-", "Unable to parse date string"),
+    ("", "Unable to parse date string"),
+    (None, "Expecting a string"),
+    ("wibble", "Unable to parse date string"),
+    ("23", "Unable to parse date string"),
+    ("131015T142533Z", "Unable to parse date string"),
+    ("131015", "Unable to parse date string"),
+    ("20141", "Unable to parse date string"),
+    ("201402", "Unable to parse date string"),
+    ("2007-06-23X06:40:34.00Z", "Unable to parse date string"),  # https://code.google.com/p/pyiso8601/issues/detail?id=14
+    ("2007-06-23 06:40:34.00Zrubbish", "Unable to parse date string"),  # https://code.google.com/p/pyiso8601/issues/detail?id=14
+    ("20114-01-03T01:45:49", "Unable to parse date string"),
+])
+def test_parse_invalid_date(invalid_date, error_string):
+    assert isinstance(invalid_date, str) or invalid_date is None  # Why? 'cos I've screwed up the parametrize before :)
+    with pytest.raises(iso8601.ParseError) as exc:
+        iso8601.parse_date(invalid_date)
+    assert exc.errisinstance(iso8601.ParseError)
+    assert str(exc.value).startswith(error_string)
+
+@pytest.mark.parametrize("valid_date,expected_datetime,isoformat", [
+    ("2007-06-23 06:40:34.00Z", datetime.datetime(2007, 6, 23, 6, 40, 34, 0, iso8601.UTC), "2007-06-23T06:40:34+00:00"),  # Handle a separator other than T
+    ("1997-07-16T19:20+01:00", datetime.datetime(1997, 7, 16, 19, 20, 0, 0, iso8601.FixedOffset(1, 0, "+01:00")), "1997-07-16T19:20:00+01:00"),  # Parse with no seconds
+    ("2007-01-01T08:00:00", datetime.datetime(2007, 1, 1, 8, 0, 0, 0, iso8601.UTC), "2007-01-01T08:00:00+00:00"),  # Handle timezone-less dates. Assumes UTC. http://code.google.com/p/pyiso8601/issues/detail?id=4
+    ("2006-10-20T15:34:56.123+02:30", datetime.datetime(2006, 10, 20, 15, 34, 56, 123000, iso8601.FixedOffset(2, 30, "+02:30")), None),
+    ("2006-10-20T15:34:56Z", datetime.datetime(2006, 10, 20, 15, 34, 56, 0, iso8601.UTC), "2006-10-20T15:34:56+00:00"),
+    ("2007-5-7T11:43:55.328Z", datetime.datetime(2007, 5, 7, 11, 43, 55, 328000, iso8601.UTC), "2007-05-07T11:43:55.328000+00:00"),  # http://code.google.com/p/pyiso8601/issues/detail?id=6
+    ("2006-10-20T15:34:56.123Z", datetime.datetime(2006, 10, 20, 15, 34, 56, 123000, iso8601.UTC), "2006-10-20T15:34:56.123000+00:00"),
+    ("2013-10-15T18:30Z", datetime.datetime(2013, 10, 15, 18, 30, 0, 0, iso8601.UTC), "2013-10-15T18:30:00+00:00"),
+    ("2013-10-15T22:30+04", datetime.datetime(2013, 10, 15, 22, 30, 0, 0, iso8601.FixedOffset(4, 0, "+04:00")), "2013-10-15T22:30:00+04:00"),  # <time>±hh:mm
+    ("2013-10-15T1130-0700", datetime.datetime(2013, 10, 15, 11, 30, 0, 0, iso8601.FixedOffset(-7, 0, "-07:00")), "2013-10-15T11:30:00-07:00"),  # <time>±hhmm
+    ("2013-10-15T1130+0700", datetime.datetime(2013, 10, 15, 11, 30, 0, 0, iso8601.FixedOffset(+7, 0, "+07:00")), "2013-10-15T11:30:00+07:00"),  # <time>±hhmm
+    ("2013-10-15T1130+07", datetime.datetime(2013, 10, 15, 11, 30, 0, 0, iso8601.FixedOffset(+7, 0, "+07:00")), "2013-10-15T11:30:00+07:00"),  # <time>±hh
+    ("2013-10-15T1130-07", datetime.datetime(2013, 10, 15, 11, 30, 0, 0, iso8601.FixedOffset(-7, 0, "-07:00")), "2013-10-15T11:30:00-07:00"),  # <time>±hh
+    ("2013-10-15T15:00-03:30", datetime.datetime(2013, 10, 15, 15, 0, 0, 0, iso8601.FixedOffset(-3, -30, "-03:30")), "2013-10-15T15:00:00-03:30"),
+    ("2013-10-15T183123Z", datetime.datetime(2013, 10, 15, 18, 31, 23, 0, iso8601.UTC), "2013-10-15T18:31:23+00:00"),  # hhmmss
+    ("2013-10-15T1831Z", datetime.datetime(2013, 10, 15, 18, 31, 0, 0, iso8601.UTC), "2013-10-15T18:31:00+00:00"),  # hhmm
+    ("2013-10-15T18Z", datetime.datetime(2013, 10, 15, 18, 0, 0, 0, iso8601.UTC), "2013-10-15T18:00:00+00:00"),  # hh
+    ("2013-10-15", datetime.datetime(2013, 10, 15, 0, 0, 0, 0, iso8601.UTC), "2013-10-15T00:00:00+00:00"),  # YYYY-MM-DD
+    ("20131015T18:30Z", datetime.datetime(2013, 10, 15, 18, 30, 0, 0, iso8601.UTC), "2013-10-15T18:30:00+00:00"),  # YYYYMMDD
+    ("2012-12-19T23:21:28.512400+00:00", datetime.datetime(2012, 12, 19, 23, 21, 28, 512400, iso8601.FixedOffset(0, 0, "+00:00")), "2012-12-19T23:21:28.512400+00:00"),  # https://code.google.com/p/pyiso8601/issues/detail?id=21
+    ("2006-10-20T15:34:56.123+0230", datetime.datetime(2006, 10, 20, 15, 34, 56, 123000, iso8601.FixedOffset(2, 30, "+02:30")), "2006-10-20T15:34:56.123000+02:30"),  # https://code.google.com/p/pyiso8601/issues/detail?id=18
+    ("19950204", datetime.datetime(1995, 2, 4, tzinfo=iso8601.UTC), "1995-02-04T00:00:00+00:00"),  # https://code.google.com/p/pyiso8601/issues/detail?id=1
+    ("2010-07-20 15:25:52.520701+00:00", datetime.datetime(2010, 7, 20, 15, 25, 52, 520701, iso8601.FixedOffset(0, 0, "+00:00")), "2010-07-20T15:25:52.520701+00:00"),  # https://code.google.com/p/pyiso8601/issues/detail?id=17
+    ("2010-06-12", datetime.datetime(2010, 6, 12, tzinfo=iso8601.UTC), "2010-06-12T00:00:00+00:00"),  # https://code.google.com/p/pyiso8601/issues/detail?id=16
+    ("1985-04-12T23:20:50.52-05:30", datetime.datetime(1985, 4, 12, 23, 20, 50, 520000, iso8601.FixedOffset(-5, -30, "-05:30")), "1985-04-12T23:20:50.520000-05:30"),  # https://bitbucket.org/micktwomey/pyiso8601/issue/8/015-parses-negative-timezones-incorrectly
+    ("1997-08-29T06:14:00.000123Z", datetime.datetime(1997, 8, 29, 6, 14, 0, 123, iso8601.UTC), "1997-08-29T06:14:00.000123+00:00"),  # https://bitbucket.org/micktwomey/pyiso8601/issue/9/regression-parsing-microseconds
+    ("2014-02", datetime.datetime(2014, 2, 1, 0, 0, 0, 0, iso8601.UTC), "2014-02-01T00:00:00+00:00"),  # https://bitbucket.org/micktwomey/pyiso8601/issue/14/regression-yyyy-mm-no-longer-parses
+    ("2014", datetime.datetime(2014, 1, 1, 0, 0, 0, 0, iso8601.UTC), "2014-01-01T00:00:00+00:00"),  # YYYY
+    ("1997-08-29T06:14:00,000123Z", datetime.datetime(1997, 8, 29, 6, 14, 0, 123, iso8601.UTC), "1997-08-29T06:14:00.000123+00:00"),  # Use , as decimal separator
+])
+def test_parse_valid_date(valid_date, expected_datetime, isoformat):
+    parsed = iso8601.parse_date(valid_date)
+    assert parsed.year == expected_datetime.year
+    assert parsed.month == expected_datetime.month
+    assert parsed.day == expected_datetime.day
+    assert parsed.hour == expected_datetime.hour
+    assert parsed.minute == expected_datetime.minute
+    assert parsed.second == expected_datetime.second
+    assert parsed.microsecond == expected_datetime.microsecond
+    assert parsed.tzinfo == expected_datetime.tzinfo
+    assert parsed == expected_datetime
+    assert parsed.isoformat() == expected_datetime.isoformat()
+    copy.deepcopy(parsed)  # ensure it's deep copy-able
+    pickle.dumps(parsed)  # ensure it pickles
+    if isoformat:
+        assert parsed.isoformat() == isoformat
+    assert iso8601.parse_date(parsed.isoformat()) == parsed  # Test round trip
diff --git a/pipenv/vendor/prettytoml/__init__.py b/pipenv/vendor/prettytoml/__init__.py
new file mode 100755
index 00000000..d7310748
--- /dev/null
+++ b/pipenv/vendor/prettytoml/__init__.py
@@ -0,0 +1,25 @@
+from ._version import VERSION
+
+__version__ = VERSION
+
+
+def prettify(toml_text):
+    """
+    Prettifies and returns the TOML file content provided.
+    """
+    from .parser import parse_tokens
+    from .lexer import tokenize
+    from .prettifier import prettify as element_prettify
+
+    tokens = tokenize(toml_text, is_top_level=True)
+    elements = parse_tokens(tokens)
+    prettified = element_prettify(elements)
+    return ''.join(pretty_element.serialized() for pretty_element in prettified)
+
+
+def prettify_from_file(file_path):
+    """
+    Reads, prettifies and returns the TOML file specified by the file_path.
+    """
+    with open(file_path, 'r') as fp:
+        return prettify(fp.read())
diff --git a/pipenv/vendor/prettytoml/_version.py b/pipenv/vendor/prettytoml/_version.py
new file mode 100755
index 00000000..e0f15470
--- /dev/null
+++ b/pipenv/vendor/prettytoml/_version.py
@@ -0,0 +1 @@
+VERSION = 'master'
diff --git a/pipenv/vendor/prettytoml/elements/__init__.py b/pipenv/vendor/prettytoml/elements/__init__.py
new file mode 100755
index 00000000..ece21123
--- /dev/null
+++ b/pipenv/vendor/prettytoml/elements/__init__.py
@@ -0,0 +1,13 @@
+
+"""
+    TOML file elements (a higher abstraction layer than individual lexical tokens).
+"""
+
+from .traversal import TraversalMixin
+from .errors import InvalidElementError
+from .table import TableElement
+from .tableheader import TableHeaderElement
+from .common import TYPE_METADATA, TYPE_ATOMIC, TYPE_CONTAINER, TYPE_MARKUP
+
+from . import traversal
+from . import factory
diff --git a/pipenv/vendor/prettytoml/elements/abstracttable.py b/pipenv/vendor/prettytoml/elements/abstracttable.py
new file mode 100755
index 00000000..59fd5748
--- /dev/null
+++ b/pipenv/vendor/prettytoml/elements/abstracttable.py
@@ -0,0 +1,81 @@
+from prettytoml.elements.common import ContainerElement
+from prettytoml.elements import traversal
+
+
+class AbstractTable(ContainerElement, traversal.TraversalMixin):
+    """
+    Common code for handling tables as key-value pairs with metadata elements sprinkled all over.
+
+    Assumes input sub_elements are correct.
+    """
+
+    def __init__(self, sub_elements):
+        ContainerElement.__init__(self, sub_elements)
+        self._fallback = None
+
+    def _enumerate_items(self):
+        """
+        Returns ((key_index, key_element), (value_index, value_element)) for all the element key-value pairs.
+        """
+        non_metadata = self._enumerate_non_metadata_sub_elements()
+        while True:
+            yield next(non_metadata), next(non_metadata)
+
+    def items(self):
+        for (key_i, key), (value_i, value) in self._enumerate_items():
+            yield key.value, value.value
+        if self._fallback:
+            for key, value in self._fallback.items():
+                yield key, value
+
+    def keys(self):
+        return tuple(key for (key, _) in self.items())
+
+    def values(self):
+        return tuple(value for (_, value) in self.items())
+
+    def __len__(self):
+        return len(tuple(self._enumerate_items()))
+
+    def __contains__(self, item):
+        return item in self.keys()
+
+    def _find_key_and_value(self, key):
+        """
+        Returns (key_i, value_i) corresponding to the given key value.
+
+        Raises KeyError if no matching key found.
+        """
+        for (key_i, key_element), (value_i, value_element) in self._enumerate_items():
+            if key_element.value == key:
+                return key_i, value_i
+        raise KeyError
+
+    def __getitem__(self, item):
+        for key, value in self.items():
+            if key == item:
+                return value
+        raise KeyError
+
+    def get(self, key, default=None):
+        try:
+            return self[key]
+        except KeyError:
+            return default
+
+    def set_fallback(self, fallback):
+        """
+        Sets a fallback dict-like instance to be used to look up values after they are not found
+        in this instance.
+        """
+        self._fallback = fallback
+
+    @property
+    def primitive_value(self):
+        """
+        Returns a primitive Python value without any formatting or markup metadata.
+        """
+        return {
+            key:
+                value.primitive_value if hasattr(value, 'primitive_value') else value for key, value in self.items()
+            }
diff --git a/pipenv/vendor/prettytoml/elements/array.py b/pipenv/vendor/prettytoml/elements/array.py
new file mode 100755
index 00000000..36c648b9
--- /dev/null
+++ b/pipenv/vendor/prettytoml/elements/array.py
@@ -0,0 +1,136 @@
+from prettytoml.elements import common, factory, traversal
+from prettytoml.elements.common import Element, ContainerElement
+from prettytoml.elements.factory import create_element
+from prettytoml.elements.metadata import NewlineElement
+from prettytoml.elements.errors import InvalidElementError
+
+
+class ArrayElement(ContainerElement, traversal.TraversalMixin):
+    """
+    A sequence-like container element containing other atomic elements or other containers.
+
+    Implements list-like interface.
+
+    Assumes input sub_elements are correct for an array element.
+
+    Raises an InvalidElementError if contains heterogeneous values.
+    """
+
+    def __init__(self, sub_elements):
+        common.ContainerElement.__init__(self, sub_elements)
+        self._check_homogeneity()
+
+    def _check_homogeneity(self):
+        if len(set(type(v) for v in self.primitive_value)) > 1:
+            raise InvalidElementError('Array should be homogeneous')
+
+    def __len__(self):
+        return len(tuple(self._enumerate_non_metadata_sub_elements()))
+
+    def __getitem__(self, i):
+        """
+        Returns the ith entry, which can be a primitive value, a seq-lie, or a dict-like object.
+        """
+        return self._find_value(i)[1].value
+
+    def __setitem__(self, i, value):
+        value_i, _ = self._find_value(i)
+        new_element = value if isinstance(value, Element) else factory.create_element(value)
+        self._sub_elements = self.sub_elements[:value_i] + [new_element] + self.sub_elements[value_i+1:]
+
+    @property
+    def value(self):
+        return self     # self is a sequence-like value
+
+    @property
+    def primitive_value(self):
+        """
+        Returns a primitive Python value without any formatting or markup metadata.
+        """
+        return list(
+            self[i].primitive_value if hasattr(self[i], 'primitive_value')
+            else self[i]
+            for i in range(len(self)))
+
+    def __str__(self):
+        return "Array{}".format(self.primitive_value)
+
+    def append(self, v):
+        new_entry = [create_element(v)]
+
+        if self:    # If not empty, we need a comma and whitespace prefix!
+            new_entry = [
+                factory.create_operator_element(','),
+                factory.create_whitespace_element(),
+            ] + new_entry
+
+        insertion_index = self._find_closing_square_bracket()
+        self._sub_elements = self._sub_elements[:insertion_index] + new_entry + \
+                             self._sub_elements[insertion_index:]
+
+    def _find_value(self, i):
+        """
+        Returns (value_index, value) of ith value in this sequence.
+
+        Raises IndexError if not found.
+        """
+        return tuple(self._enumerate_non_metadata_sub_elements())[i]
+
+    def __delitem__(self, i):
+        value_i, value = self._find_value(i)
+
+        begin, end = value_i, value_i+1
+
+        # Rules:
+        #   1. begin should be index to the preceding comma to the value
+        #   2. end should be index to the following comma, or the closing bracket
+        #   3. If no preceding comma found but following comma found then end should be the index of the following value
+
+        preceding_comma = self._find_preceding_comma(value_i)
+        found_preceding_comma = preceding_comma >= 0
+        if found_preceding_comma:
+            begin = preceding_comma
+
+        following_comma = self._find_following_comma(value_i)
+        if following_comma >= 0:
+            if not found_preceding_comma:
+                end = self._find_following_non_metadata(following_comma)
+            else:
+                end = following_comma
+        else:
+            end = self._find_following_closing_square_bracket()
+
+        self._sub_elements = self.sub_elements[:begin] + self._sub_elements[end:]
+
+    @property
+    def is_multiline(self):
+        return any(isinstance(e, (NewlineElement)) for e in self.elements)
+
+    def turn_into_multiline(self):
+        """
+        Turns this array into a multi-line array with each element lying on its own line.
+        """
+        if self.is_multiline:
+            return
+
+        i = self._find_following_comma(-1)
+
+        def next_entry_i():
+            return self._find_following_non_metadata(i)
+
+        def next_newline_i():
+            return self._find_following_newline(i)
+
+        def next_closing_bracket_i():
+            return self._find_following_closing_square_bracket(i)
+
+        def next_comma_i():
+            return self._find_following_comma(i)
+
+        while i < len(self.elements)-1:
+            if next_newline_i() < next_entry_i():
+                self.elements.insert(i+1, factory.create_newline_element())
+                if float('-inf') < next_comma_i() < next_closing_bracket_i():
+                    i = next_comma_i()
+                else:
+                    i = next_closing_bracket_i()
diff --git a/pipenv/vendor/prettytoml/elements/atomic.py b/pipenv/vendor/prettytoml/elements/atomic.py
new file mode 100755
index 00000000..571810d9
--- /dev/null
+++ b/pipenv/vendor/prettytoml/elements/atomic.py
@@ -0,0 +1,52 @@
+from ..tokens import py2toml, toml2py
+from . import common
+from prettytoml.util import is_dict_like, is_sequence_like
+from .errors import InvalidElementError
+
+
+class AtomicElement(common.TokenElement):
+    """
+    An element containing a sequence of tokens representing a single atomic value that can be updated in place.
+
+    Raises:
+        InvalidElementError: when passed an invalid sequence of tokens.
+    """
+
+    def __init__(self, _tokens):
+        common.TokenElement.__init__(self, _tokens, common.TYPE_ATOMIC)
+
+    def _validate_tokens(self, _tokens):
+        if len([token for token in _tokens if not token.type.is_metadata]) != 1:
+            raise InvalidElementError('Tokens making up an AtomicElement must contain only one non-metadata token')
+
+    def serialized(self):
+        return ''.join(token.source_substring for token in self.tokens)
+
+    def _value_token_index(self):
+        """
+        Finds the token where the value is stored.
+        """
+        # TODO: memoize this value
+        for i, token in enumerate(self.tokens):
+            if not token.type.is_metadata:
+                return i
+        raise RuntimeError('could not find a value token')
+
+    @property
+    def value(self):
+        """
+        Returns a Python value contained in this atomic element.
+        """
+        return toml2py.deserialize(self._tokens[self._value_token_index()])
+
+    @property
+    def primitive_value(self):
+        return self.value
+
+    def set(self, value):
+        """
+        Sets the contained value to the given one.
+        """
+        assert (not is_sequence_like(value)) and (not is_dict_like(value)), 'the value must be an atomic primitive'
+        token_index = self._value_token_index()
+        self._tokens[token_index] = py2toml.create_primitive_token(value)
diff --git a/pipenv/vendor/prettytoml/elements/common.py b/pipenv/vendor/prettytoml/elements/common.py
new file mode 100755
index 00000000..7508047a
--- /dev/null
+++ b/pipenv/vendor/prettytoml/elements/common.py
@@ -0,0 +1,101 @@
+from abc import abstractmethod
+
+TYPE_METADATA = 'element-metadata'
+TYPE_ATOMIC = 'element-atomic'
+TYPE_CONTAINER = 'element-container'
+TYPE_MARKUP = 'element-markup'
+
+class Element:
+    """
+    An Element:
+        - is one or more Token instances, or one or more other Element instances. Not both.
+        - knows how to serialize its value back to valid TOML code.
+
+    A non-metadata Element is an Element that:
+        - knows how to deserialize its content into usable Python primitive, seq-like,  or dict-like value.
+        - knows how to update its content from a Python primitive, seq-like, or dict-like value
+            while maintaining its formatting.
+    """
+
+    def __init__(self, _type):
+        self._type = _type
+
+    @property
+    def type(self):
+        return self._type
+
+    @abstractmethod
+    def serialized(self):
+        """
+        TOML serialization of this element as str.
+        """
+        raise NotImplementedError
+
+
+class TokenElement(Element):
+    """
+    An Element made up of tokens
+    """
+
+    def __init__(self, _tokens, _type):
+        Element.__init__(self, _type)
+        self._validate_tokens(_tokens)
+        self._tokens = list(_tokens)
+
+    @property
+    def tokens(self):
+        return self._tokens
+
+    @property
+    def first_token(self):
+        return self._tokens[0]
+
+    @abstractmethod
+    def _validate_tokens(self, _tokens):
+        raise NotImplementedError
+
+    def serialized(self):
+        return ''.join(token.source_substring for token in self._tokens)
+
+    def __repr__(self):
+        return repr(self.tokens)
+
+    @property
+    def primitive_value(self):
+        """
+        Returns a primitive Python value without any formatting or markup metadata.
+        """
+        raise NotImplementedError
+
+
+class ContainerElement(Element):
+    """
+    An Element containing exclusively other elements.
+    """
+
+    def __init__(self, sub_elements):
+        Element.__init__(self, TYPE_CONTAINER)
+        self._sub_elements = list(sub_elements)
+
+    @property
+    def sub_elements(self):
+        return self._sub_elements
+
+    @property
+    def elements(self):
+        return self.sub_elements
+
+    def serialized(self):
+        return ''.join(element.serialized() for element in self.sub_elements)
+
+    def __repr__(self):
+        return repr(self.primitive_value)
+
+    @property
+    def primitive_value(self):
+        """
+        Returns a primitive Python value without any formatting or markup metadata.
+        """
+        raise NotImplementedError
+
+
diff --git a/pipenv/vendor/prettytoml/elements/errors.py b/pipenv/vendor/prettytoml/elements/errors.py
new file mode 100755
index 00000000..0fcf2e99
--- /dev/null
+++ b/pipenv/vendor/prettytoml/elements/errors.py
@@ -0,0 +1,13 @@
+
+class InvalidElementError(Exception):
+    """
+    Raised by Element factories when the given sequence of tokens or sub-elements are invalid for the
+    specific type of Element being created.
+    """
+
+    def __init__(self, message):
+        self.message = message
+
+    def __repr__(self):
+        return "InvalidElementError: {}".format(self.message)
+
diff --git a/pipenv/vendor/prettytoml/elements/factory.py b/pipenv/vendor/prettytoml/elements/factory.py
new file mode 100755
index 00000000..177738db
--- /dev/null
+++ b/pipenv/vendor/prettytoml/elements/factory.py
@@ -0,0 +1,152 @@
+import datetime
+import functools
+import six
+from prettytoml import tokens
+from prettytoml.tokens import py2toml
+from prettytoml.elements.atomic import AtomicElement
+from prettytoml.elements.metadata import PunctuationElement, WhitespaceElement, NewlineElement
+from prettytoml.elements.tableheader import TableHeaderElement
+from prettytoml.util import join_with, is_sequence_like
+
+
+def create_element(value, multiline_strings_allowed=True):
+    """
+    Creates and returns the appropriate elements.Element instance from the given Python primitive, sequence-like,
+    or dict-like value.
+    """
+    from prettytoml.elements.array import ArrayElement
+
+    if isinstance(value, (int, float, bool, datetime.datetime, datetime.date) + six.string_types) or value is None:
+        primitive_token = py2toml.create_primitive_token(value, multiline_strings_allowed=multiline_strings_allowed)
+        return AtomicElement((primitive_token,))
+
+    elif isinstance(value, (list, tuple)):
+        preamble = [create_operator_element('[')]
+        postable = [create_operator_element(']')]
+        stuffing_elements = [create_element(v) for v in value]
+        spaced_stuffing = join_with(stuffing_elements,
+                                    separator=[create_operator_element(','), create_whitespace_element()])
+
+        return ArrayElement(preamble + spaced_stuffing + postable)
+
+    elif isinstance(value, dict):
+        return create_inline_table(value, multiline_table=False, multiline_strings_allowed=multiline_strings_allowed)
+
+    else:
+        raise RuntimeError('Value type unaccounted for: {} of type {}'.format(value, type(value)))
+
+
+def create_inline_table(from_dict, multiline_table=False, multiline_strings_allowed=True):
+    """
+    Creates an InlineTable element from the given dict instance.
+    """
+
+    from prettytoml.elements.inlinetable import InlineTableElement
+
+    preamble = [create_operator_element('{')]
+    postable = [create_operator_element('}')]
+
+    stuffing_elements = (
+        (
+            create_string_element(k, bare_allowed=True),
+            create_whitespace_element(),
+            create_operator_element('='),
+            create_whitespace_element(),
+            create_element(v, multiline_strings_allowed=False)
+        ) for (k, v) in from_dict.items())
+
+    pair_separator = [create_operator_element(','),
+                      create_newline_element() if multiline_table else create_whitespace_element()]
+    spaced_elements = join_with(stuffing_elements, separator=pair_separator)
+
+    return InlineTableElement(preamble + spaced_elements + postable)
+
+
+def create_string_element(value, bare_allowed=False):
+    """
+    Creates and returns an AtomicElement wrapping a string value.
+    """
+    return AtomicElement((py2toml.create_string_token(value, bare_allowed),))
+
+
+def create_operator_element(operator):
+    """
+    Creates a PunctuationElement instance containing an operator token of the specified type. The operator
+    should be a TOML source str.
+    """
+    operator_type_map = {
+        ',': tokens.TYPE_OP_COMMA,
+        '=': tokens.TYPE_OP_ASSIGNMENT,
+        '[': tokens.TYPE_OP_SQUARE_LEFT_BRACKET,
+        ']': tokens.TYPE_OP_SQUARE_RIGHT_BRACKET,
+        '[[': tokens.TYPE_OP_DOUBLE_SQUARE_LEFT_BRACKET,
+        ']]': tokens.TYPE_OP_DOUBLE_SQUARE_RIGHT_BRACKET,
+        '{': tokens.TYPE_OP_CURLY_LEFT_BRACKET,
+        '}': tokens.TYPE_OP_CURLY_RIGHT_BRACKET,
+    }
+
+    ts = (tokens.Token(operator_type_map[operator], operator),)
+    return PunctuationElement(ts)
+
+
+def create_newline_element():
+    """
+    Creates and returns a single NewlineElement.
+    """
+    ts = (tokens.Token(tokens.TYPE_NEWLINE, '\n'),)
+    return NewlineElement(ts)
+
+
+def create_whitespace_element(length=1, char=' '):
+    """
+    Creates and returns a WhitespaceElement containing spaces.
+    """
+    ts = (tokens.Token(tokens.TYPE_WHITESPACE, char),) * length
+    return WhitespaceElement(ts)
+
+
+def create_table_header_element(names):
+
+    name_elements = []
+
+    if isinstance(names, six.string_types):
+        name_elements = [py2toml.create_string_token(names, bare_string_allowed=True)]
+    else:
+        for (i, name) in enumerate(names):
+            name_elements.append(py2toml.create_string_token(name, bare_string_allowed=True))
+            if i < (len(names)-1):
+                name_elements.append(py2toml.operator_token(tokens.TYPE_OPT_DOT))
+
+    return TableHeaderElement(
+        [py2toml.operator_token(tokens.TYPE_OP_SQUARE_LEFT_BRACKET)] + name_elements +
+        [py2toml.operator_token(tokens.TYPE_OP_SQUARE_RIGHT_BRACKET), py2toml.operator_token(tokens.TYPE_NEWLINE)],
+    )
+
+
+def create_array_of_tables_header_element(name):
+    return TableHeaderElement((
+        py2toml.operator_token(tokens.TYPE_OP_DOUBLE_SQUARE_LEFT_BRACKET),
+        py2toml.create_string_token(name, bare_string_allowed=True),
+        py2toml.operator_token(tokens.TYPE_OP_DOUBLE_SQUARE_RIGHT_BRACKET),
+        py2toml.operator_token(tokens.TYPE_NEWLINE),
+    ))
+
+
+def create_table(dict_value):
+    """
+    Creates a TableElement out of a dict instance.
+    """
+    from prettytoml.elements.table import TableElement
+
+    if not isinstance(dict_value, dict):
+        raise ValueError('input must be a dict instance.')
+
+    table_element = TableElement([create_newline_element()])
+    for k, v in dict_value.items():
+        table_element[k] = create_element(v)
+
+    return table_element
+
+
+def create_multiline_string(text, maximum_line_length):
+    return AtomicElement(_tokens=[py2toml.create_multiline_string(text, maximum_line_length)])
diff --git a/pipenv/vendor/prettytoml/elements/inlinetable.py b/pipenv/vendor/prettytoml/elements/inlinetable.py
new file mode 100755
index 00000000..7b985fc1
--- /dev/null
+++ b/pipenv/vendor/prettytoml/elements/inlinetable.py
@@ -0,0 +1,78 @@
+from prettytoml.elements import factory, abstracttable
+from prettytoml.elements.common import Element
+
+
+class InlineTableElement(abstracttable.AbstractTable):
+    """
+    An Element containing key-value pairs, representing an inline table.
+
+    Implements dict-like interface.
+
+    Assumes input sub_elements are correct for an inline table element.
+    """
+
+    def __init__(self, sub_elements):
+        abstracttable.AbstractTable.__init__(self, sub_elements)
+
+    def __setitem__(self, key, value):
+
+        new_element = value if isinstance(value, Element) else factory.create_element(value)
+
+        try:
+
+            key_i, value_i = self._find_key_and_value(key)
+            # Found, then replace the value element with a new one
+            self._sub_elements = self.sub_elements[:value_i] + [new_element] + self.sub_elements[value_i+1:]
+
+        except KeyError:    # Key does not exist, adding anew!
+
+            new_entry = [
+                factory.create_string_element(key, bare_allowed=True),
+                factory.create_whitespace_element(),
+                factory.create_operator_element('='),
+                factory.create_whitespace_element(),
+                new_element,
+            ]
+
+            if self:    # If not empty
+                new_entry = [
+                    factory.create_operator_element(','),
+                    factory.create_whitespace_element(),
+                ] + new_entry
+
+            insertion_index = self._find_closing_curly_bracket()
+            self._sub_elements = self.sub_elements[:insertion_index] + new_entry + self.sub_elements[insertion_index:]
+
+    def __delitem__(self, key):
+
+        key_i, value_i = self._find_key_and_value(key)
+
+        begin, end = key_i, value_i+1
+
+        # Rules:
+        #   1. begin should be index to the preceding comma to the key
+        #   2. end should be index to the following comma, or the closing bracket
+        #   3. If no preceding comma found but following comma found then end should be the index of the following key
+
+        preceding_comma = self._find_preceding_comma(begin)
+        found_preceding_comma = preceding_comma >= 0
+        if found_preceding_comma:
+            begin = preceding_comma
+
+        following_comma = self._find_following_comma(value_i)
+        if following_comma >= 0:
+            if not found_preceding_comma:
+                end = self._find_following_non_metadata(following_comma)
+            else:
+                end = following_comma
+        else:
+            end = self._find_closing_curly_bracket()
+
+        self._sub_elements = self.sub_elements[:begin] + self.sub_elements[end:]
+
+    def multiline_equivalent(self):
+        return factory.create_inline_table(self.primitive_value, multiline_table=True, multiline_strings_allowed=True)
+
+    @property
+    def value(self):
+        return self     # self is a dict-like value that is perfectly usable
diff --git a/pipenv/vendor/prettytoml/elements/metadata.py b/pipenv/vendor/prettytoml/elements/metadata.py
new file mode 100755
index 00000000..d5ee1061
--- /dev/null
+++ b/pipenv/vendor/prettytoml/elements/metadata.py
@@ -0,0 +1,80 @@
+from prettytoml import tokens
+from prettytoml.elements import common
+from .errors import InvalidElementError
+
+
+class WhitespaceElement(common.TokenElement):
+    """
+    An element that contains tokens of whitespace
+    """
+
+    def __init__(self, _tokens):
+        common.TokenElement.__init__(self, _tokens, common.TYPE_METADATA)
+    
+    def _validate_tokens(self, _tokens):
+        for token in _tokens:
+            if token.type != tokens.TYPE_WHITESPACE:
+                raise InvalidElementError('Tokens making up a WhitespaceElement must all be whitespace')
+
+    @property
+    def length(self):
+        """
+        The whitespace length of this element
+        """
+        return len(self.tokens)
+
+
+class NewlineElement(common.TokenElement):
+    """
+    An element containing newline tokens
+
+    Raises:
+        InvalidElementError: when passed an invalid sequence of tokens.
+    """
+
+    def __init__(self, _tokens):
+        common.TokenElement.__init__(self, _tokens, common.TYPE_METADATA)
+
+    def _validate_tokens(self, _tokens):
+        for token in _tokens:
+            if token.type != tokens.TYPE_NEWLINE:
+                raise InvalidElementError('Tokens making a NewlineElement must all be newlines')
+
+
+class CommentElement(common.TokenElement):
+    """
+    An element containing a single comment token followed by a newline.
+
+    Raises:
+        InvalidElementError: when passed an invalid sequence of tokens.
+    """
+
+    def __init__(self, _tokens):
+        common.TokenElement.__init__(self, _tokens, common.TYPE_METADATA)
+
+    def _validate_tokens(self, _tokens):
+        if len(_tokens) != 2 or _tokens[0].type != tokens.TYPE_COMMENT or _tokens[1].type != tokens.TYPE_NEWLINE:
+            raise InvalidElementError('CommentElement needs one comment token followed by one newline token')
+
+
+class PunctuationElement(common.TokenElement):
+    """
+    An element containing a single punctuation token.
+
+    Raises:
+        InvalidElementError: when passed an invalid sequence of tokens.
+    """
+
+    def __init__(self, _tokens):
+        common.TokenElement.__init__(self, _tokens, common.TYPE_METADATA)
+
+    @property
+    def token(self):
+        """
+        Returns the token contained in this Element.
+        """
+        return self.tokens[0]
+
+    def _validate_tokens(self, _tokens):
+        if not _tokens or not tokens.is_operator(_tokens[0]):
+            raise InvalidElementError('PunctuationElement must be made of only a single operator token')
diff --git a/pipenv/vendor/prettytoml/elements/table.py b/pipenv/vendor/prettytoml/elements/table.py
new file mode 100755
index 00000000..8dd7cd9d
--- /dev/null
+++ b/pipenv/vendor/prettytoml/elements/table.py
@@ -0,0 +1,122 @@
+from prettytoml.elements import abstracttable, factory
+from prettytoml.elements.errors import InvalidElementError
+from prettytoml.elements.common import Element
+from prettytoml.elements.metadata import CommentElement, NewlineElement, WhitespaceElement
+from . import common
+
+
+class TableElement(abstracttable.AbstractTable):
+    """
+    An Element containing an unnamed top-level table.
+
+    Implements dict-like interface.
+
+    Assumes input sub_elements are correct.
+
+    Raises InvalidElementError on duplicate keys.
+    """
+
+    def __init__(self, sub_elements):
+        abstracttable.AbstractTable.__init__(self, sub_elements)
+
+        self._check_for_duplicate_keys()
+
+    def _check_for_duplicate_keys(self):
+        if len(set(self.keys())) < len(self.keys()):
+            raise InvalidElementError('Duplicate keys found')
+
+    def __setitem__(self, key, value):
+        if key in self:
+            self._update(key, value)
+        else:
+            self._insert(key, value)
+
+    def _update(self, key, value):
+        _, value_i = self._find_key_and_value(key)
+        self._sub_elements[value_i] = value if isinstance(value, Element) else factory.create_element(value)
+
+    def _find_insertion_index(self):
+        """
+        Returns the self.sub_elements index in which new entries should be inserted.
+        """
+
+        non_metadata_elements = tuple(self._enumerate_non_metadata_sub_elements())
+
+        if not non_metadata_elements:
+            return 0
+
+        last_entry_i = non_metadata_elements[-1][0]
+        following_newline_i = self._find_following_line_terminator(last_entry_i)
+
+        return following_newline_i + 1
+
+    def _detect_indentation_size(self):
+        """
+        Detects the level of indentation used in this table.
+        """
+
+        def lines():
+            # Returns a sequence of sequences of elements belonging to each line
+            start = 0
+            for i, element in enumerate(self.elements):
+                if isinstance(element, (CommentElement, NewlineElement)):
+                    yield self.elements[start:i+1]
+                    start = i+1
+
+        def indentation(line):
+            # Counts the number of whitespace tokens at the beginning of this line
+            try:
+                first_non_whitespace_i = next(i for (i, e) in enumerate(line) if not isinstance(e, WhitespaceElement))
+                return sum(space.length for space in line[:first_non_whitespace_i])
+            except StopIteration:
+                return 0
+
+        def is_empty_line(line):
+            return all(e.type == common.TYPE_METADATA for e in line)
+
+        try:
+            return min(indentation(line) for line in lines() if len(line) > 1 and not is_empty_line(line))
+        except ValueError:  # Raised by ValueError when no matching lines found
+            return 0
+
+    def _insert(self, key, value):
+
+        value_element = value if isinstance(value, Element) else factory.create_element(value)
+
+        indentation_size = self._detect_indentation_size()
+        indentation = [factory.create_whitespace_element(self._detect_indentation_size())] if indentation_size else []
+
+        inserted_elements = indentation + [
+            factory.create_string_element(key, bare_allowed=True),
+            factory.create_whitespace_element(),
+            factory.create_operator_element('='),
+            factory.create_whitespace_element(),
+            value_element,
+            factory.create_newline_element(),
+        ]
+
+        insertion_index = self._find_insertion_index()
+
+        self._sub_elements = \
+            self.sub_elements[:insertion_index] + inserted_elements + self.sub_elements[insertion_index:]
+
+    def __delitem__(self, key):
+        begin, _ = self._find_key_and_value(key)
+        preceding_newline = self._find_preceding_newline(begin)
+        if preceding_newline >= 0:
+            begin = preceding_newline
+        end = self._find_following_newline(begin)
+        if end < 0:
+            end = len(tuple(self._sub_elements))
+        self._sub_elements = self.sub_elements[:begin] + self.sub_elements[end:]
+
+    def pop(self, key):
+        v = self[key]
+        del self[key]
+        return v
+
+    def value(self):
+        return self
+
+    def __str__(self):
+        return str(self.primitive_value)
diff --git a/pipenv/vendor/prettytoml/elements/tableheader.py b/pipenv/vendor/prettytoml/elements/tableheader.py
new file mode 100755
index 00000000..eacd88b9
--- /dev/null
+++ b/pipenv/vendor/prettytoml/elements/tableheader.py
@@ -0,0 +1,95 @@
+from prettytoml import tokens
+from prettytoml.tokens import toml2py
+from prettytoml.elements import common
+from prettytoml.elements.common import Element, TokenElement
+from prettytoml.elements.errors import InvalidElementError
+
+_opening_bracket_types = (tokens.TYPE_OP_SQUARE_LEFT_BRACKET, tokens.TYPE_OP_DOUBLE_SQUARE_LEFT_BRACKET)
+_closing_bracket_types = (tokens.TYPE_OP_SQUARE_RIGHT_BRACKET, tokens.TYPE_OP_DOUBLE_SQUARE_RIGHT_BRACKET)
+_name_types = (
+    tokens.TYPE_BARE_STRING,
+    tokens.TYPE_LITERAL_STRING,
+    tokens.TYPE_STRING,
+)
+
+
+class TableHeaderElement(TokenElement):
+    """
+    An element containing opening and closing single and double square brackets, strings and dots and ending with
+    a newline.
+    
+    Raises InvalidElementError.
+    """
+    
+    def __init__(self, _tokens):
+        TokenElement.__init__(self, _tokens, common.TYPE_MARKUP)
+        self._names = tuple(toml2py.deserialize(token) for token in self._tokens if token.type in _name_types)
+
+    @property
+    def is_array_of_tables(self):
+        opening_bracket = next(token for i, token in enumerate(self._tokens) if token.type in _opening_bracket_types)
+        return opening_bracket.type == tokens.TYPE_OP_DOUBLE_SQUARE_LEFT_BRACKET
+
+    @property
+    def names(self):
+        """
+        Returns a sequence of string names making up this table header name.
+        """
+        return self._names
+
+    def has_name_prefix(self, names):
+        """
+        Returns True if the header names is prefixed by the given sequence of names.
+        """
+        for i, name in enumerate(names):
+            if self.names[i] != name:
+                return False
+        return True
+
+    def serialized(self):
+        return ''.join(token.source_substring for token in self._tokens)
+
+    def is_named(self, names):
+        """
+        Returns True if the given name sequence matches the full name of this header.
+        """
+        return tuple(names) == self.names
+
+    def _validate_tokens(self, _tokens):
+
+        opening_bracket_i = next((i for i, token in enumerate(_tokens)
+                                  if token.type in _opening_bracket_types), float('-inf'))
+
+        if opening_bracket_i < 0:
+            raise InvalidElementError('Expected an opening bracket')
+
+        _tokens = _tokens[opening_bracket_i+1:]
+        first_name_i = next((i for i, token in enumerate(_tokens) if token.type in _name_types), float('-inf'))
+        if first_name_i < 0:
+            raise InvalidElementError('Expected a table header name')
+
+        _tokens = _tokens[first_name_i+1:]
+
+        while True:
+
+            next_dot_i = next((i for i, token in enumerate(_tokens) if token.type == tokens.TYPE_OPT_DOT),
+                              float('-inf'))
+            if next_dot_i < 0:
+                break
+
+            _tokens = _tokens[next_dot_i+1:]
+
+            next_name_i = next((i for i, token in enumerate(_tokens) if token.type in _name_types), float('-inf'))
+            if next_name_i < 0:
+                raise InvalidElementError('Expected a name after the dot')
+
+            _tokens = _tokens[next_name_i+1:]
+
+        closing_bracket_i = next((i for i, token in enumerate(_tokens) if token.type in _closing_bracket_types),
+                                 float('-inf'))
+
+        if closing_bracket_i < 0:
+            raise InvalidElementError('Expected a closing bracket')
+
+        if _tokens[-1].type != tokens.TYPE_NEWLINE:
+            raise InvalidElementError('Must end with a newline')
diff --git a/pipenv/vendor/prettytoml/elements/test_array.py b/pipenv/vendor/prettytoml/elements/test_array.py
new file mode 100755
index 00000000..3ccc98b5
--- /dev/null
+++ b/pipenv/vendor/prettytoml/elements/test_array.py
@@ -0,0 +1,67 @@
+import pytest
+from prettytoml import lexer
+from prettytoml.elements.array import ArrayElement
+from prettytoml.elements.atomic import AtomicElement
+from prettytoml.elements.metadata import PunctuationElement, WhitespaceElement, NewlineElement
+
+
+def test_array_element():
+    tokens = tuple(lexer.tokenize('[4, 8, 42, \n 23, 15]'))
+    assert len(tokens) == 17
+    sub_elements = (
+        PunctuationElement(tokens[:1]),
+
+        AtomicElement(tokens[1:2]),
+        PunctuationElement(tokens[2:3]),
+        WhitespaceElement(tokens[3:4]),
+
+        AtomicElement(tokens[4:5]),
+        PunctuationElement(tokens[5:6]),
+        WhitespaceElement(tokens[6:7]),
+
+        AtomicElement(tokens[7:8]),
+        PunctuationElement(tokens[8:9]),
+        WhitespaceElement(tokens[9:10]),
+        NewlineElement(tokens[10:11]),
+        WhitespaceElement(tokens[11:12]),
+
+        AtomicElement(tokens[12:13]),
+        PunctuationElement(tokens[13:14]),
+
+        WhitespaceElement(tokens[14:15]),
+        AtomicElement(tokens[15:16]),
+        PunctuationElement(tokens[16:17])
+    )
+
+    array_element = ArrayElement(sub_elements)
+
+    # Test length
+    assert len(array_element) == 5
+
+    # Test getting a value
+    assert array_element[0] == 4
+    assert array_element[1] == 8
+    assert array_element[2] == 42
+    assert array_element[3] == 23
+    assert array_element[-1] == 15
+
+    # Test assignment with a negative index
+    array_element[-1] = 12
+
+    # Test persistence of formatting
+    assert '[4, 8, 42, \n 23, 12]' == array_element.serialized()
+
+    # Test raises IndexError on invalid index
+    with pytest.raises(IndexError) as _:
+        print(array_element[5])
+
+    # Test appending a new value
+    array_element.append(77)
+    assert '[4, 8, 42, \n 23, 12, 77]' == array_element.serialized()
+
+    # Test deleting a value
+    del array_element[3]
+    assert '[4, 8, 42, 12, 77]' == array_element.serialized()
+
+    # Test primitive_value
+    assert [4, 8, 42, 12, 77] == array_element.primitive_value
diff --git a/pipenv/vendor/prettytoml/elements/test_atomic.py b/pipenv/vendor/prettytoml/elements/test_atomic.py
new file mode 100755
index 00000000..940ddd27
--- /dev/null
+++ b/pipenv/vendor/prettytoml/elements/test_atomic.py
@@ -0,0 +1,9 @@
+from prettytoml import lexer
+from prettytoml.elements.atomic import AtomicElement
+
+
+def test_atomic_element():
+    element = AtomicElement(tuple(lexer.tokenize(' \t 42 ')))
+    assert element.value == 42
+    element.set(23)
+    assert element.serialized() == ' \t 23 '
diff --git a/pipenv/vendor/prettytoml/elements/test_common.py b/pipenv/vendor/prettytoml/elements/test_common.py
new file mode 100755
index 00000000..9f5dd4c8
--- /dev/null
+++ b/pipenv/vendor/prettytoml/elements/test_common.py
@@ -0,0 +1,89 @@
+from prettytoml import tokens, lexer
+from prettytoml.elements import traversal
+from prettytoml.elements.atomic import AtomicElement
+from prettytoml.elements.metadata import NewlineElement, PunctuationElement, WhitespaceElement, CommentElement
+from prettytoml.elements.table import TableElement
+from prettytoml.elements.tableheader import TableHeaderElement
+
+atomic_token_types = (
+    tokens.TYPE_INTEGER,
+    tokens.TYPE_FLOAT,
+    tokens.TYPE_BARE_STRING,
+    tokens.TYPE_STRING,
+    tokens.TYPE_LITERAL_STRING,
+    tokens.TYPE_MULTILINE_STRING,
+    tokens.TYPE_MULTILINE_LITERAL_STRING,
+)
+
+punctuation_token_types = (
+    tokens.TYPE_OPT_DOT,
+    tokens.TYPE_OP_CURLY_LEFT_BRACKET,
+    tokens.TYPE_OP_SQUARE_LEFT_BRACKET,
+    tokens.TYPE_OP_DOUBLE_SQUARE_LEFT_BRACKET,
+    tokens.TYPE_OP_SQUARE_RIGHT_BRACKET,
+    tokens.TYPE_OP_CURLY_RIGHT_BRACKET,
+    tokens.TYPE_OP_DOUBLE_SQUARE_RIGHT_BRACKET,
+    tokens.TYPE_OP_ASSIGNMENT,
+)
+
+def primitive_token_to_primitive_element(token):
+    if token.type == tokens.TYPE_NEWLINE:
+        return NewlineElement((token,))
+    elif token.type in atomic_token_types:
+        return AtomicElement((token,))
+    elif token.type == tokens.TYPE_NEWLINE:
+        return NewlineElement((token,))
+    elif token.type in punctuation_token_types:
+        return PunctuationElement((token,))
+    elif token.type == tokens.TYPE_WHITESPACE:
+        return WhitespaceElement((token,))
+    elif token.type == tokens.TYPE_COMMENT:
+        return CommentElement((token,))
+    else:
+        raise RuntimeError("{} has no mapped primitive element".format(token))
+
+
+def primitive_tokens_to_primitive_elements(tokens):
+    return list(map(primitive_token_to_primitive_element, tokens))
+
+
+def dummy_file_elements():
+        tokens_ = tuple(lexer.tokenize("""
+name = fawzy
+another_name=another_fawzy
+
+[details]
+id= 42
+section =fourth
+
+[[person]]
+personname= lefawzy
+dest=north
+
+[[person]]
+dest=south
+personname=lafawzy
+
+[details.extended]
+number = 313
+type =complex"""))
+
+        elements = \
+            [TableElement(primitive_tokens_to_primitive_elements(tokens_[:12]))] + \
+            [TableHeaderElement(tokens_[12:16])] + \
+            [TableElement(primitive_tokens_to_primitive_elements(tokens_[16:25]))] + \
+            [TableHeaderElement(tokens_[25:31])] + \
+            [TableElement(primitive_tokens_to_primitive_elements(tokens_[31:39]))] + \
+            [TableHeaderElement(tokens_[39:45])] + \
+            [TableElement(primitive_tokens_to_primitive_elements(tokens_[45:53]))] + \
+            [TableHeaderElement(tokens_[53:60])] + \
+            [TableElement(primitive_tokens_to_primitive_elements(tokens_[60:]))]
+
+        return elements
+
+
+class DummyFile(traversal.TraversalMixin):
+
+    @property
+    def elements(self):
+        return dummy_file_elements()
diff --git a/pipenv/vendor/prettytoml/elements/test_factory.py b/pipenv/vendor/prettytoml/elements/test_factory.py
new file mode 100755
index 00000000..08a42883
--- /dev/null
+++ b/pipenv/vendor/prettytoml/elements/test_factory.py
@@ -0,0 +1,22 @@
+from collections import OrderedDict
+from prettytoml.elements import factory
+from prettytoml.elements.array import ArrayElement
+from prettytoml.elements.atomic import AtomicElement
+from prettytoml.elements.inlinetable import InlineTableElement
+
+
+def test_creating_elements():
+
+    atomic = factory.create_element(42)
+    assert isinstance(atomic, AtomicElement)
+    assert atomic.value == 42
+
+    seq = factory.create_element(['a', 'p', 'p', 'l', 'e'])
+    assert isinstance(seq, ArrayElement)
+    assert seq.serialized() == '["a", "p", "p", "l", "e"]'
+    assert ''.join(seq.primitive_value) == 'apple'
+
+    mapping = factory.create_element(OrderedDict((('one', 1), ('two', 2))))
+    assert isinstance(mapping, InlineTableElement)
+    assert mapping.serialized() == '{one = 1, two = 2}'
+
diff --git a/pipenv/vendor/prettytoml/elements/test_inlinetable.py b/pipenv/vendor/prettytoml/elements/test_inlinetable.py
new file mode 100755
index 00000000..3c663873
--- /dev/null
+++ b/pipenv/vendor/prettytoml/elements/test_inlinetable.py
@@ -0,0 +1,52 @@
+from prettytoml import lexer
+from prettytoml.elements.atomic import AtomicElement
+from prettytoml.elements.inlinetable import InlineTableElement
+from prettytoml.elements.metadata import PunctuationElement, WhitespaceElement
+
+
+def test_inline_table():
+    tokens = tuple(lexer.tokenize('{ name= "first", id=42}'))
+
+    elements = (
+        PunctuationElement(tokens[:1]),
+        WhitespaceElement(tokens[1:2]),
+        AtomicElement(tokens[2:3]),
+        PunctuationElement(tokens[3:4]),
+        WhitespaceElement(tokens[4:5]),
+        AtomicElement(tokens[5:6]),
+        PunctuationElement(tokens[6:7]),
+        WhitespaceElement(tokens[7:8]),
+        AtomicElement(tokens[8:9]),
+        PunctuationElement(tokens[9:10]),
+        AtomicElement(tokens[10:11]),
+        PunctuationElement(tokens[11:12])
+    )
+
+    table = InlineTableElement(elements)
+
+    assert table['name'] == 'first'
+    assert table['id'] == 42
+
+    table['name'] = 'fawzy'
+    table['nickname'] = 'nickfawzy'
+
+    assert set(table.items()) == {('name', 'fawzy'), ('id', 42), ('nickname', 'nickfawzy')}
+
+    assert table.serialized() == '{ name= "fawzy", id=42, nickname = "nickfawzy"}'
+
+    del table['name']
+
+    assert table.serialized() == '{ id=42, nickname = "nickfawzy"}'
+
+    del table['nickname']
+
+    assert table.serialized() == '{ id=42}'
+
+    del table['id']
+
+    assert table.serialized() == '{ }'
+
+    table['item1'] = 11
+    table['item2'] = 22
+
+    assert table.serialized() == '{ item1 = 11, item2 = 22}'
diff --git a/pipenv/vendor/prettytoml/elements/test_metadata.py b/pipenv/vendor/prettytoml/elements/test_metadata.py
new file mode 100755
index 00000000..6e49fedd
--- /dev/null
+++ b/pipenv/vendor/prettytoml/elements/test_metadata.py
@@ -0,0 +1,25 @@
+from prettytoml import lexer
+from prettytoml.elements.metadata import WhitespaceElement, NewlineElement, CommentElement, PunctuationElement
+
+
+def test_whitespace_element():
+    element = WhitespaceElement(tuple(lexer.tokenize(' \t   ')))
+    assert element.serialized() == ' \t   '
+
+
+def test_newline_element():
+    element = NewlineElement(tuple(lexer.tokenize('\n\n\n')))
+    assert element.serialized() == '\n\n\n'
+
+
+def test_comment_element():
+    element = CommentElement(tuple(lexer.tokenize('# This is my insightful remark\n')))
+    assert element.serialized() == '# This is my insightful remark\n'
+
+
+def test_punctuation_element():
+    PunctuationElement(tuple(lexer.tokenize('[')))
+    PunctuationElement(tuple(lexer.tokenize('[[')))
+    PunctuationElement(tuple(lexer.tokenize('.')))
+    PunctuationElement(tuple(lexer.tokenize(']')))
+    PunctuationElement(tuple(lexer.tokenize(']]')))
diff --git a/pipenv/vendor/prettytoml/elements/test_table.py b/pipenv/vendor/prettytoml/elements/test_table.py
new file mode 100755
index 00000000..ef0dba81
--- /dev/null
+++ b/pipenv/vendor/prettytoml/elements/test_table.py
@@ -0,0 +1,59 @@
+from prettytoml import lexer
+from prettytoml.elements.atomic import AtomicElement
+from prettytoml.elements.metadata import WhitespaceElement, PunctuationElement, NewlineElement, CommentElement
+from prettytoml.elements.table import TableElement
+
+
+def test_table():
+
+    initial_toml = """name = "first"
+id=42 # My id
+
+
+"""
+
+    tokens = tuple(lexer.tokenize(initial_toml))
+
+    elements = (
+        AtomicElement(tokens[:1]),
+        WhitespaceElement(tokens[1:2]),
+        PunctuationElement(tokens[2:3]),
+        WhitespaceElement(tokens[3:4]),
+        AtomicElement(tokens[4:5]),
+        NewlineElement(tokens[5:6]),
+
+        AtomicElement(tokens[6:7]),
+        PunctuationElement(tokens[7:8]),
+        AtomicElement(tokens[8:9]),
+        WhitespaceElement(tokens[9:10]),
+        CommentElement(tokens[10:12]),
+
+        NewlineElement(tokens[12:13]),
+        NewlineElement(tokens[13:14]),
+    )
+
+    table = TableElement(elements)
+
+    assert set(table.items()) == {('name', 'first'), ('id', 42)}
+
+    assert table['name'] == 'first'
+    assert table['id'] == 42
+
+    table['relation'] = 'another'
+
+    assert set(table.items()) == {('name', 'first'), ('id', 42), ('relation', 'another')}
+
+    table['name'] = 'fawzy'
+
+    assert set(table.items()) == {('name', 'fawzy'), ('id', 42), ('relation', 'another')}
+
+    expected_toml = """name = "fawzy"
+id=42 # My id
+relation = "another"
+
+
+"""
+
+    assert table.serialized() == expected_toml
+
+
diff --git a/pipenv/vendor/prettytoml/elements/test_tableheader.py b/pipenv/vendor/prettytoml/elements/test_tableheader.py
new file mode 100755
index 00000000..67b1ded4
--- /dev/null
+++ b/pipenv/vendor/prettytoml/elements/test_tableheader.py
@@ -0,0 +1,12 @@
+from prettytoml import lexer
+from prettytoml.elements.tableheader import TableHeaderElement
+
+
+def test_tableheader():
+    tokens = tuple(lexer.tokenize('\n\t [[personal. information.details]] \n'))
+    element = TableHeaderElement(tokens)
+
+    assert element.is_array_of_tables
+    assert ('personal', 'information', 'details') == element.names
+
+    assert element.has_name_prefix(('personal', 'information'))
diff --git a/pipenv/vendor/prettytoml/elements/test_traversal.py b/pipenv/vendor/prettytoml/elements/test_traversal.py
new file mode 100755
index 00000000..2f002571
--- /dev/null
+++ b/pipenv/vendor/prettytoml/elements/test_traversal.py
@@ -0,0 +1,18 @@
+from prettytoml.elements.test_common import DummyFile
+
+
+def test_traversal():
+    dummy_file = DummyFile()
+
+    assert dummy_file._find_following_table_header(-1) == 1
+    assert dummy_file._find_following_table_header(1) == 3
+    assert dummy_file._find_following_table_header(3) == 5
+    assert dummy_file._find_following_table_header(5) == 7
+    assert dummy_file._find_following_table_header(7) < 0
+
+    assert dummy_file._find_preceding_table(30) == 8
+    assert dummy_file._find_preceding_table(8) == 6
+    assert dummy_file._find_preceding_table(6) == 4
+    assert dummy_file._find_preceding_table(4) == 2
+    assert dummy_file._find_preceding_table(2) == 0
+    assert dummy_file._find_preceding_table(0) < 0
diff --git a/pipenv/vendor/prettytoml/elements/traversal/__init__.py b/pipenv/vendor/prettytoml/elements/traversal/__init__.py
new file mode 100755
index 00000000..5b980459
--- /dev/null
+++ b/pipenv/vendor/prettytoml/elements/traversal/__init__.py
@@ -0,0 +1,175 @@
+from prettytoml import tokens
+from prettytoml.elements import common
+from prettytoml.elements.metadata import PunctuationElement, NewlineElement
+from prettytoml.elements.traversal import predicates
+
+
+class TraversalMixin:
+    """
+    A mix-in that provides convenient sub-element traversal to any class with
+    an `elements` member that is a sequence of Element instances
+    """
+
+    def __find_following_element(self, index, predicate):
+        """
+        Finds and returns the index of element in self.elements that evaluates the given predicate to True
+        and whose index is higher than the given index, or returns -Infinity on failure.
+        """
+        return find_following(self.elements, predicate, index)
+
+    def __find_preceding_element(self, index, predicate):
+        """
+        Finds and returns the index of the element in self.elements that evaluates the given predicate to True
+        and whose index is lower than the given index.
+        """
+        i = find_previous(self.elements, predicate, index)
+        if i == float('inf'):
+            return float('-inf')
+        return i
+
+    def __must_find_following_element(self, predicate):
+        """
+        Finds and returns the index to the element in self.elements that evaluatest the predicate to True, or raises
+        an error.
+        """
+        i = self.__find_following_element(-1, predicate)
+        if i < 0:
+            raise RuntimeError('Could not find non-optional element')
+        return i
+
+    def _enumerate_non_metadata_sub_elements(self):
+        """
+        Returns a sequence of of (index, sub_element) of the non-metadata sub-elements.
+        """
+        return ((i, element) for i, element in enumerate(self.elements) if element.type != common.TYPE_METADATA)
+
+    def _find_preceding_comma(self, index):
+        """
+        Returns the index of the preceding comma element to the given index, or -Infinity.
+        """
+        return self.__find_preceding_element(index, predicates.op_comma)
+
+    def _find_following_comma(self, index):
+        """
+        Returns the index of the following comma element after the given index, or -Infinity.
+        """
+        def predicate(element):
+            return isinstance(element, PunctuationElement) and element.token.type == tokens.TYPE_OP_COMMA
+        return self.__find_following_element(index, predicate)
+
+    def _find_following_newline(self, index):
+        """
+        Returns the index of the following newline element after the given index, or -Infinity.
+        """
+        return self.__find_following_element(index, lambda e: isinstance(e, NewlineElement))
+
+    def _find_following_comment(self, index):
+        """
+        Returns the index of the following comment element after the given index, or -Infinity.
+        """
+        return self.__find_following_element(index, predicates.comment)
+
+    def _find_following_line_terminator(self, index):
+        """
+        Returns the index of the following comment or newline element after the given index, or -Infinity.
+        """
+        following_comment = self._find_following_comment(index)
+        following_newline = self._find_following_newline(index)
+
+        if following_comment == float('-inf'):
+            return following_newline
+        if following_newline == float('inf'):
+            return following_comment
+
+        if following_newline < following_comment:
+            return following_newline
+        else:
+            return following_comment
+
+    def _find_preceding_newline(self, index):
+        """
+        Returns the index of the preceding newline element to the given index, or -Infinity.
+        """
+        return self.__find_preceding_element(index, predicates.newline)
+
+    def _find_following_non_metadata(self, index):
+        """
+        Returns the index to the following non-metadata element after the given index, or -Infinity.
+        """
+        return self.__find_following_element(index, predicates.non_metadata)
+
+    def _find_closing_square_bracket(self):
+        """
+        Returns the index to the closing square bracket, or raises an Error.
+        """
+
+        return self.__must_find_following_element(predicates.closing_square_bracket)
+
+    def _find_following_opening_square_bracket(self, index):
+        """
+        Returns the index to the opening square bracket, or -Infinity.
+        """
+        return self.__find_following_element(index, predicates.opening_square_bracket)
+
+    def _find_following_closing_square_bracket(self, index):
+        """
+        Returns the index to the closing square bracket, or -Infinity.
+        """
+        return self.__find_following_element(index, predicates.closing_square_bracket)
+
+    def _find_following_table(self, index):
+        """
+        Returns the index to the next TableElement after the specified index, or -Infinity.
+        """
+        return self.__find_following_element(index, predicates.table)
+
+    def _find_preceding_table(self, index):
+        """
+        Returns the index to the preceding TableElement to the specified index, or -Infinity.
+        """
+        return self.__find_preceding_element(index,predicates.table)
+
+    def _find_closing_curly_bracket(self):
+        """
+        Returns the index to the closing curly bracket, or raises an Error.
+        """
+        def predicate(element):
+            return isinstance(element, PunctuationElement) and element.token.type == tokens.TYPE_OP_CURLY_RIGHT_BRACKET
+        return self.__must_find_following_element(predicate)
+
+    def _find_following_table_header(self, index):
+        """
+        Returns the index to the table header after the given element index, or -Infinity.
+        """
+        return self.__find_following_element(index, predicates.table_header)
+
+
+def find_following(element_seq, predicate, index=None):
+    """
+    Finds and returns the index of the next element fulfilling the specified predicate after the specified
+    index, or -Infinity.
+
+    Starts searching linearly from the start_from index.
+    """
+
+    if isinstance(index, (int, float)) and index < 0:
+        index = None
+
+    for i, element in tuple(enumerate(element_seq))[index+1 if index is not None else index:]:
+        if predicate(element):
+            return i
+    return float('-inf')
+
+
+def find_previous(element_seq, predicate, index=None):
+    """
+    Finds and returns the index of the previous element fulfilling the specified predicate preceding to the specified
+    index, or Infinity.
+    """
+    if isinstance(index, (int, float)) and index >= len(element_seq):
+        index = None
+
+    for i, element in reversed(tuple(enumerate(element_seq))[:index]):
+        if predicate(element):
+            return i
+    return float('inf')
diff --git a/pipenv/vendor/prettytoml/elements/traversal/predicates.py b/pipenv/vendor/prettytoml/elements/traversal/predicates.py
new file mode 100755
index 00000000..f18616bf
--- /dev/null
+++ b/pipenv/vendor/prettytoml/elements/traversal/predicates.py
@@ -0,0 +1,48 @@
+
+"""
+     The following predicates can be used in the traversal functions directly.
+"""
+
+from ..atomic import AtomicElement
+from ..metadata import PunctuationElement, CommentElement, NewlineElement, WhitespaceElement
+from prettytoml import tokens
+from .. import common
+
+
+atomic = lambda e: isinstance(e, AtomicElement)
+
+
+op_assignment = lambda e: isinstance(e, PunctuationElement) and e.token.type == tokens.TYPE_OP_ASSIGNMENT
+
+
+op_comma = lambda e: isinstance(e, PunctuationElement) and e.token.type == tokens.TYPE_OP_COMMA
+
+
+comment = lambda e: isinstance(e, CommentElement)
+
+
+newline = lambda e: isinstance(e, NewlineElement)
+
+
+non_metadata = lambda e: e.type != common.TYPE_METADATA
+
+
+closing_square_bracket = \
+    lambda e: isinstance(e, PunctuationElement) and e.token.type == tokens.TYPE_OP_SQUARE_RIGHT_BRACKET
+
+
+opening_square_bracket = \
+    lambda e: isinstance(e, PunctuationElement) and e.token.type == tokens.TYPE_OP_SQUARE_LEFT_BRACKET
+
+
+def table(e):
+    from ..table import TableElement
+    return isinstance(e, TableElement)
+
+
+def table_header(e):
+    from prettytoml.elements.tableheader import TableHeaderElement
+    return isinstance(e, TableHeaderElement)
+
+
+whitespace = lambda e: isinstance(e, WhitespaceElement)
diff --git a/pipenv/vendor/prettytoml/errors.py b/pipenv/vendor/prettytoml/errors.py
new file mode 100755
index 00000000..23e69eb5
--- /dev/null
+++ b/pipenv/vendor/prettytoml/errors.py
@@ -0,0 +1,32 @@
+
+
+class TOMLError(Exception):
+    """
+    All errors raised by this module are descendants of this type.
+    """
+
+
+class InvalidTOMLFileError(TOMLError):
+    pass
+
+
+class NoArrayFoundError(TOMLError):
+    """
+    An array of tables was requested but none exist by the given name.
+    """
+
+
+class InvalidValueError(TOMLError):
+    pass
+
+
+class DuplicateKeysError(TOMLError):
+    """
+    Duplicate keys detected in the parsed file.
+    """
+
+
+class DuplicateTablesError(TOMLError):
+    """
+    Duplicate tables detected in the parsed file.
+    """
diff --git a/pipenv/vendor/prettytoml/lexer/__init__.py b/pipenv/vendor/prettytoml/lexer/__init__.py
new file mode 100755
index 00000000..da32963a
--- /dev/null
+++ b/pipenv/vendor/prettytoml/lexer/__init__.py
@@ -0,0 +1,123 @@
+
+"""
+A regular expression based Lexer/tokenizer for TOML.
+"""
+
+from collections import namedtuple
+import re
+from prettytoml import tokens
+from prettytoml.errors import TOMLError
+
+TokenSpec = namedtuple('TokenSpec', ('type', 're'))
+
+# Specs of all the valid tokens
+_LEXICAL_SPECS = (
+    TokenSpec(tokens.TYPE_COMMENT, re.compile(r'^(#.*)\n')),
+    TokenSpec(tokens.TYPE_STRING, re.compile(r'^("(([^"]|\\")+?[^\\]|([^"]|\\")|)")')),                       # Single line only
+    TokenSpec(tokens.TYPE_MULTILINE_STRING, re.compile(r'^(""".*?""")', re.DOTALL)),
+    TokenSpec(tokens.TYPE_LITERAL_STRING, re.compile(r"^('.*?')")),
+    TokenSpec(tokens.TYPE_MULTILINE_LITERAL_STRING, re.compile(r"^('''.*?''')", re.DOTALL)),
+    TokenSpec(tokens.TYPE_BARE_STRING, re.compile(r'^([A-Za-z0-9_-]+)')),
+    TokenSpec(tokens.TYPE_DATE, re.compile(
+        r'^([0-9]{4}-[0-9]{2}-[0-9]{2}(T[0-9]{2}:[0-9]{2}:[0-9]{2}(\.[0-9]*)?)?(([zZ])|((\+|-)[0-9]{2}:[0-9]{2}))?)')),
+    TokenSpec(tokens.TYPE_WHITESPACE, re.compile(r'^( |\t)', re.DOTALL)),
+    TokenSpec(tokens.TYPE_INTEGER, re.compile(r'^(((\+|-)[0-9_]+)|([0-9][0-9_]*))')),
+    TokenSpec(tokens.TYPE_FLOAT,
+              re.compile(r'^((((\+|-)[0-9_]+)|([1-9][0-9_]*))(\.[0-9_]+)?([eE](\+|-)?[0-9_]+)?)')),
+    TokenSpec(tokens.TYPE_BOOLEAN, re.compile(r'^(true|false)')),
+    TokenSpec(tokens.TYPE_OP_SQUARE_LEFT_BRACKET, re.compile(r'^(\[)')),
+    TokenSpec(tokens.TYPE_OP_SQUARE_RIGHT_BRACKET, re.compile(r'^(\])')),
+    TokenSpec(tokens.TYPE_OP_CURLY_LEFT_BRACKET, re.compile(r'^(\{)')),
+    TokenSpec(tokens.TYPE_OP_CURLY_RIGHT_BRACKET, re.compile(r'^(\})')),
+    TokenSpec(tokens.TYPE_OP_ASSIGNMENT, re.compile(r'^(=)')),
+    TokenSpec(tokens.TYPE_OP_COMMA, re.compile(r'^(,)')),
+    TokenSpec(tokens.TYPE_OP_DOUBLE_SQUARE_LEFT_BRACKET, re.compile(r'^(\[\[)')),
+    TokenSpec(tokens.TYPE_OP_DOUBLE_SQUARE_RIGHT_BRACKET, re.compile(r'^(\]\])')),
+    TokenSpec(tokens.TYPE_OPT_DOT, re.compile(r'^(\.)')),
+    TokenSpec(tokens.TYPE_NEWLINE, re.compile('^(\n|\r\n)')),
+)
+
+
+def _next_token_candidates(source):
+    matches = []
+    for token_spec in _LEXICAL_SPECS:
+        match = token_spec.re.search(source)
+        if match:
+            matches.append(tokens.Token(token_spec.type, match.group(1)))
+    return matches
+
+
+def _choose_from_next_token_candidates(candidates):
+
+    if len(candidates) == 1:
+        return candidates[0]
+    elif len(candidates) > 1:
+        # Return the maximal-munch with ties broken by natural order of token type.
+        maximal_munch_length = max(len(token.source_substring) for token in candidates)
+        maximal_munches = [token for token in candidates if len(token.source_substring) == maximal_munch_length]
+        return sorted(maximal_munches)[0]   # Return the first in sorting by priority
+
+
+def _munch_a_token(source):
+    """
+    Munches a single Token instance if it could recognize one at the beginning of the
+    given source text, or None if no token type could be recognized.
+    """
+    candidates = _next_token_candidates(source)
+    return _choose_from_next_token_candidates(candidates)
+
+
+class LexerError(TOMLError):
+
+    def __init__(self, message):
+        self._message = message
+
+    def __repr__(self):
+        return self._message
+
+    def __str__(self):
+        return self._message
+
+
+def tokenize(source, is_top_level=False):
+    """
+    Tokenizes the input TOML source into a stream of tokens.
+
+    If is_top_level is set to True, will make sure that the input source has a trailing newline character
+    before it is tokenized.
+
+    Raises a LexerError when it fails recognize another token while not at the end of the source.
+    """
+
+    # Newlines are going to be normalized to UNIX newlines.
+    source = source.replace('\r\n', '\n')
+
+    if is_top_level and source and source[-1] != '\n':
+        source += '\n'
+
+    next_row = 1
+    next_col = 1
+    next_index = 0
+
+    while next_index < len(source):
+
+        new_token = _munch_a_token(source[next_index:])
+
+        if not new_token:
+            raise LexerError("failed to read the next token at ({}, {}): {}".format(
+                next_row, next_col, source[next_index:]))
+
+        # Set the col and row on the new token
+        new_token = tokens.Token(new_token.type, new_token.source_substring, next_col, next_row)
+
+        # Advance the index, row and col count
+        next_index += len(new_token.source_substring)
+        for c in new_token.source_substring:
+            if c == '\n':
+                next_row += 1
+                next_col = 1
+            else:
+                next_col += 1
+
+        yield new_token
+
diff --git a/pipenv/vendor/prettytoml/lexer/test_lexer.py b/pipenv/vendor/prettytoml/lexer/test_lexer.py
new file mode 100755
index 00000000..df10b46d
--- /dev/null
+++ b/pipenv/vendor/prettytoml/lexer/test_lexer.py
@@ -0,0 +1,153 @@
+# -*- coding: utf-8 -*-
+
+from prettytoml.lexer import _munch_a_token
+from prettytoml.lexer import *
+
+# A mapping from token types to a sequence of pairs of (source_text, expected_matched_text)
+valid_tokens = {
+    tokens.TYPE_COMMENT: (
+        (
+            '# My very insightful comment about the state of the universe\n# And now for something completely different!',
+            '# My very insightful comment about the state of the universe',
+        ),
+    ),
+    tokens.TYPE_STRING: (
+        ('"a valid hug3 text" "some other string" = 42', '"a valid hug3 text"'),
+        (
+            r'"I\'m a string. \"You can quote me\". Name\tJos\u00E9\nLocation\tSF." "some other string" = 42',
+            r'"I\'m a string. \"You can quote me\". Name\tJos\u00E9\nLocation\tSF."'
+        ),
+        ('"ʎǝʞ" key', '"ʎǝʞ"'),
+        ('""', '""'),
+        ('"t"', '"t"'),
+    ),
+    tokens.TYPE_MULTILINE_STRING: (
+        ('"""\nRoses are red\nViolets are blue""" """other text"""', '"""\nRoses are red\nViolets are blue"""'),
+    ),
+    tokens.TYPE_LITERAL_STRING: (
+        (r"'This is \ \n a \\ literal string' 'another \ literal string'", r"'This is \ \n a \\ literal string'"),
+    ),
+    tokens.TYPE_MULTILINE_LITERAL_STRING: (
+        (
+            "'''\nThe first newline is\ntrimmed in raw strings.\n   All other whitespace\n   is preserved.\n''' '''some other\n\n\t string'''",
+            "'''\nThe first newline is\ntrimmed in raw strings.\n   All other whitespace\n   is preserved.\n'''"
+        ),
+    ),
+    tokens.TYPE_DATE: (
+        ('1979-05-27 5345', '1979-05-27'),
+        ('1979-05-27T07:32:00Z something', '1979-05-27T07:32:00Z'),
+        ('1979-05-27T00:32:00-07:00 ommm', '1979-05-27T00:32:00-07:00'),
+        ('1979-05-27T00:32:00.999999-07:00 2346', '1979-05-27T00:32:00.999999-07:00'),
+    ),
+    tokens.TYPE_WHITESPACE: (
+        (' \t\n \r  some_text', ' '),
+    ),
+    tokens.TYPE_INTEGER: (
+        ('+99 "number"', "+99"),
+        ('42 fwfwef', "42"),
+        ('-17 fh34g34g', "-17"),
+        ('5_349_221 apples', "5_349_221"),
+        ('-1_2_3_4_5 steps', '-1_2_3_4_5')
+    ),
+    tokens.TYPE_FLOAT: (
+        ('1.0 fwef', '1.0'),
+        ('3.1415 g4g', '3.1415'),
+        ('-0.01 433re', '-0.01'),
+        ('5e+2_2 ersdvf', '5e+2_2'),
+        ('1e6 ewe23', '1e6'),
+        ('-2E-2.2 3 rf23', '-2E-2'),
+        ('6.626e-34 +234f', '6.626e-34'),
+        ('9_224_617.445_991_228_313 f1ewer 23f4h = nonesense', '9_224_617.445_991_228_313'),
+        ('1e1_000 2346f,ef2!!', '1e1_000'),
+    ),
+    tokens.TYPE_BOOLEAN: (
+        ('false business = true', 'false'),
+        ('true true', 'true'),
+    ),
+    tokens.TYPE_OP_SQUARE_LEFT_BRACKET: (
+        ('[table_name]', '['),
+    ),
+    tokens.TYPE_OP_SQUARE_RIGHT_BRACKET: (
+        (']\nbusiness = awesome', ']'),
+    ),
+    tokens.TYPE_OP_CURLY_LEFT_BRACKET: (
+        ('{item_exists = no}', '{'),
+    ),
+    tokens.TYPE_OP_CURLY_RIGHT_BRACKET: (
+        ('} moving on', '}'),
+    ),
+    tokens.TYPE_OP_COMMA: (
+        (',item2,item4', ','),
+    ),
+    tokens.TYPE_OP_ASSIGNMENT: (
+        ('== 42', '='),
+    ),
+    tokens.TYPE_OP_DOUBLE_SQUARE_LEFT_BRACKET: (
+        ('[[array.of.tables]]', '[['),
+    ),
+    tokens.TYPE_OP_DOUBLE_SQUARE_RIGHT_BRACKET: (
+        (']] item=3', ']]'),
+    ),
+    tokens.TYPE_BARE_STRING: (
+        ('key another', 'key'),
+        ('bare_key 2fews', 'bare_key'),
+        ('bare-key kfcw', 'bare-key'),
+    ),
+    tokens.TYPE_OPT_DOT: (
+        ('."another key"', '.'),
+        ('.subname', '.'),
+    ),
+    tokens.TYPE_NEWLINE: (
+        ('\n\r \n', '\n'),
+    )
+}
+
+# A mapping from a token type to a sequence of (source, matched_text) pairs that shouldn't result from consuming the
+# source text.
+invalid_tokens = {
+    tokens.TYPE_INTEGER: (
+        ('_234_423', ''),
+        ('0446234234', ''),
+    ),
+    tokens.TYPE_STRING: (
+        ('"""', '"""'),
+    ),
+    tokens.TYPE_BOOLEAN: (
+        ('True', 'True'),
+        ('True', 'true'),
+    ),
+    tokens.TYPE_FLOAT: (
+        ('', ''),
+    )
+}
+
+
+def test_valid_tokenizing():
+    for token_type in valid_tokens:
+        for (source, expected_match) in valid_tokens[token_type]:
+
+            token = _munch_a_token(source)
+            assert token, "Failed to tokenize: {}\nExpected: {}\nOut of: {}\nGot nothing!".format(
+                token_type, expected_match, source)
+
+            assert token.type == token_type, \
+                "Expected type: {}\nOut of: {}\nThat matched: {}\nOf type: {}".format(
+                    token_type, source, token.source_substring, token.type)
+            assert token.source_substring == expected_match
+
+
+def test_invalid_tokenizing():
+    for token_type in invalid_tokens:
+        for source, expected_match in invalid_tokens[token_type]:
+            token = _munch_a_token(source)
+            if token:
+                assert not (token.type == token_type and token.source_substring == expected_match)
+
+
+def test_token_type_order():
+    type_a = tokens.TokenType('a', 5, is_metadata=False)
+    type_b = tokens.TokenType('b', 0, is_metadata=False)
+    type_c = tokens.TokenType('c', 3, is_metadata=False)
+
+    assert type_b < type_c < type_a
+    assert type_a > type_c > type_b
diff --git a/pipenv/vendor/prettytoml/parser/__init__.py b/pipenv/vendor/prettytoml/parser/__init__.py
new file mode 100755
index 00000000..4cf600c0
--- /dev/null
+++ b/pipenv/vendor/prettytoml/parser/__init__.py
@@ -0,0 +1,34 @@
+
+"""
+    A parser for TOML tokens into TOML elements.
+"""
+
+
+from prettytoml.parser.errors import ParsingError
+
+
+def parse_tokens(tokens):
+    """
+    Parses the given token sequence into a sequence of top-level TOML elements.
+
+    Raises ParserError on invalid TOML input.
+    """
+    from .tokenstream import TokenStream
+    return _parse_token_stream(TokenStream(tokens))
+
+
+def _parse_token_stream(token_stream):
+    """
+    Parses the given token_stream into a sequence of top-level TOML elements.
+
+    Raises ParserError on invalid input TOML.
+    """
+    from .parser import toml_file_elements
+    from .elementsanitizer import sanitize
+
+    elements, pending = toml_file_elements(token_stream)
+
+    if not pending.at_end:
+        raise ParsingError('Failed to parse line {}'.format(pending.head.row))
+
+    return sanitize(elements)
diff --git a/pipenv/vendor/prettytoml/parser/elementsanitizer.py b/pipenv/vendor/prettytoml/parser/elementsanitizer.py
new file mode 100755
index 00000000..bec4893a
--- /dev/null
+++ b/pipenv/vendor/prettytoml/parser/elementsanitizer.py
@@ -0,0 +1,58 @@
+from prettytoml import elements
+from prettytoml.elements.table import TableElement
+from prettytoml.elements.tableheader import TableHeaderElement
+from prettytoml.errors import InvalidTOMLFileError
+from prettytoml.util import PeekableIterator
+
+
+def sanitize(_elements):
+    """
+    Finds TableHeader elements that are not followed by TableBody elements and inserts empty TableElement
+    right after those.
+    """
+
+    output = list(_elements)
+
+    def find_next_table_header(after=-1):
+        return next((i for (i, element) in enumerate(output)
+                     if i > after and isinstance(element, TableHeaderElement)), float('-inf'))
+
+    def find_next_table_body(after=-1):
+        return next((i for (i, element) in enumerate(output)
+                     if i > after and isinstance(element, TableElement)), float('-inf'))
+
+    next_table_header_i = find_next_table_header()
+    while next_table_header_i >= 0:
+
+        following_table_header_i = find_next_table_header(next_table_header_i)
+        following_table_body_i = find_next_table_body(next_table_header_i)
+
+        if (following_table_body_i < 0) or \
+                (following_table_header_i >= 0 and (following_table_header_i < following_table_body_i)):
+            output.insert(next_table_header_i+1, TableElement(tuple()))
+
+        next_table_header_i = find_next_table_header(next_table_header_i)
+
+    return output
+
+
+def validate_sanitized(_elements):
+
+    # Non-metadata elements must start with an optional TableElement, followed by
+    # zero or more (TableHeaderElement, TableElement) pairs.
+
+    if not _elements:
+        return
+
+    it = PeekableIterator(e for e in _elements if e.type != elements.TYPE_METADATA)
+
+    if isinstance(it.peek(), TableElement):
+        it.next()
+
+    while it.peek():
+        if not isinstance(it.peek(), TableHeaderElement):
+            raise InvalidTOMLFileError
+        it.next()
+        if not isinstance(it.peek(), TableElement):
+            raise InvalidTOMLFileError
+        it.next()
diff --git a/pipenv/vendor/prettytoml/parser/errors.py b/pipenv/vendor/prettytoml/parser/errors.py
new file mode 100755
index 00000000..eca12f32
--- /dev/null
+++ b/pipenv/vendor/prettytoml/parser/errors.py
@@ -0,0 +1,17 @@
+from prettytoml.errors import TOMLError
+
+
+class ParsingError(TOMLError):
+
+    def __init__(self, message='', token=None):
+        self.message = message
+        self.token = token
+
+    def __repr__(self):
+        if self.message and self.token:
+            return "{} at row {} and col {}".format(self.message, self.token.row, self.token.col)
+        else:
+            return self.message
+
+    def __str__(self):
+        return repr(self)
diff --git a/pipenv/vendor/prettytoml/parser/parser.py b/pipenv/vendor/prettytoml/parser/parser.py
new file mode 100755
index 00000000..e61c0db5
--- /dev/null
+++ b/pipenv/vendor/prettytoml/parser/parser.py
@@ -0,0 +1,376 @@
+
+"""
+    A Recursive Descent implementation of a lexical parser for TOML.
+
+    Grammar:
+    --------
+
+    Newline -> NEWLINE
+    Comment -> COMMENT Newline
+    LineTerminator -> Comment | Newline
+    Space -> WHITESPACE Space | WHITESPACE | EMPTY
+    TableHeader -> Space [ Space TableHeaderName Space ] Space LineTerminator |
+        Space [[ Space TableHeaderName Space ]] Space LineTerminator
+    TableHeaderName -> STRING Space '.' Space TableHeaderName | STRING
+    Atomic -> STRING | INTEGER | FLOAT | DATE | BOOLEAN
+
+    Array -> '[' Space ArrayInternal Space ']' | '[' Space ArrayInternal Space LineTerminator Space ']'
+    ArrayInternal -> LineTerminator Space ArrayInternal | Value Space ',' Space LineTerminator Space ArrayInternal |
+        Value Space ',' Space ArrayInternal | LineTerminator | Value | EMPTY
+
+    InlineTable -> '{' Space InlineTableInternal Space '}'
+    InlineTableKeyValuePair = STRING Space '=' Space Value
+    InlineTableInternal -> InlineTableKeyValuePair Space ',' Space InlineTableInternal |
+        InlineTableKeyValuePair | Empty
+
+    Value -> Atomic | InlineTable | Array
+    KeyValuePair -> Space STRING Space '=' Space Value Space LineTerminator
+
+    TableBody -> KeyValuePair TableBody | EmptyLine TableBody | EmptyLine | KeyValuePair
+
+    EmptyLine -> Space LineTerminator
+    FileEntry -> TableHeader | TableBody
+
+    TOMLFileElements -> FileEntry TOMLFileElements | FileEntry | EmptyLine | EMPTY
+"""
+
+from prettytoml import tokens
+from prettytoml.elements.array import ArrayElement
+from prettytoml.elements.atomic import AtomicElement
+from prettytoml.elements.inlinetable import InlineTableElement
+from prettytoml.elements.metadata import NewlineElement, CommentElement, WhitespaceElement, PunctuationElement
+from prettytoml.elements.table import TableElement
+from prettytoml.elements.tableheader import TableHeaderElement
+
+from prettytoml.parser.recdesc import capture_from
+from prettytoml.parser.errors import ParsingError
+from prettytoml.parser.tokenstream import TokenStream
+
+"""
+    Non-terminals are represented as functions which return (RESULT, pending_token_stream), or raise ParsingError.
+"""
+
+
+def token(token_type):
+    def factory(ts):
+        t = ts.head
+        if t.type != token_type:
+            raise ParsingError('Expected a token of type {}'.format(token_type))
+        return t, ts.tail
+    return factory
+
+
+def newline_element(token_stream):
+    """
+    Returns NewlineElement, pending_token_stream or raises ParsingError.
+    """
+    captured = capture_from(token_stream).find(token(tokens.TYPE_NEWLINE))
+    return NewlineElement(captured.value()), captured.pending_tokens
+
+
+def comment_tokens(ts1):
+    c1 = capture_from(ts1).find(token(tokens.TYPE_COMMENT)).and_find(token(tokens.TYPE_NEWLINE))
+    return c1.value(), c1.pending_tokens
+
+
+def comment_element(token_stream):
+    """
+    Returns CommentElement, pending_token_stream or raises ParsingError.
+    """
+    captured = capture_from(token_stream).find(comment_tokens)
+    return CommentElement(captured.value()), captured.pending_tokens
+
+
+def line_terminator_tokens(token_stream):
+    captured = capture_from(token_stream).find(comment_tokens).or_find(token(tokens.TYPE_NEWLINE))
+    return captured.value(), captured.pending_tokens
+
+
+def line_terminator_element(token_stream):
+    captured = capture_from(token_stream).find(comment_element).or_find(newline_element)
+    return captured.value('Expected a comment or a newline')[0], captured.pending_tokens
+
+
+def zero_or_more_tokens(token_type):
+
+    def factory(token_stream):
+        def more(ts):
+            c = capture_from(ts).find(token(token_type)).and_find(zero_or_more_tokens(token_type))
+            return c.value(), c.pending_tokens
+
+        def two(ts):
+            c = capture_from(ts).find(token(tokens.TYPE_WHITESPACE))
+            return c.value(), c.pending
+
+        def zero(ts):
+            return tuple(), ts
+
+        captured = capture_from(token_stream).find(more).or_find(two).or_find(zero)
+        return captured.value(), captured.pending_tokens
+
+    return factory
+
+
+def space_element(token_stream):
+    captured = capture_from(token_stream).find(zero_or_more_tokens(tokens.TYPE_WHITESPACE))
+    return WhitespaceElement([t for t in captured.value() if t]), captured.pending_tokens
+
+
+def string_token(token_stream):
+    captured = capture_from(token_stream).\
+        find(token(tokens.TYPE_BARE_STRING)).\
+        or_find(token(tokens.TYPE_STRING)).\
+        or_find(token(tokens.TYPE_LITERAL_STRING)).\
+        or_find(token(tokens.TYPE_MULTILINE_STRING)).\
+        or_find(token(tokens.TYPE_MULTILINE_LITERAL_STRING))
+    return captured.value('Expected a string'), captured.pending_tokens
+
+
+def string_element(token_stream):
+    captured = capture_from(token_stream).find(string_token)
+    return AtomicElement(captured.value()), captured.pending_tokens
+
+
+def table_header_name_tokens(token_stream):
+
+    def one(ts):
+        c = capture_from(ts).\
+            find(string_token).\
+            and_find(zero_or_more_tokens(tokens.TYPE_WHITESPACE)).\
+            and_find(token(tokens.TYPE_OPT_DOT)).\
+            and_find(zero_or_more_tokens(tokens.TYPE_WHITESPACE)).\
+            and_find(table_header_name_tokens)
+        return c.value(), c.pending_tokens
+
+    captured = capture_from(token_stream).find(one).or_find(string_token)
+    return captured.value(), captured.pending_tokens
+
+
+def table_header_element(token_stream):
+
+    def single(ts1):
+        c1 = capture_from(ts1).\
+            find(zero_or_more_tokens(tokens.TYPE_WHITESPACE)).\
+            and_find(token(tokens.TYPE_OP_SQUARE_LEFT_BRACKET)).\
+            and_find(zero_or_more_tokens(tokens.TYPE_WHITESPACE)).\
+            and_find(table_header_name_tokens).\
+            and_find(zero_or_more_tokens(tokens.TYPE_WHITESPACE)).\
+            and_find(token(tokens.TYPE_OP_SQUARE_RIGHT_BRACKET)).\
+            and_find(zero_or_more_tokens(tokens.TYPE_WHITESPACE)).\
+            and_find(line_terminator_tokens)
+
+        return c1.value(), c1.pending_tokens
+
+    def double(ts2):
+        c2 = capture_from(ts2).\
+            find(zero_or_more_tokens(tokens.TYPE_WHITESPACE)).\
+            and_find(token(tokens.TYPE_OP_DOUBLE_SQUARE_LEFT_BRACKET)).\
+            and_find(zero_or_more_tokens(tokens.TYPE_WHITESPACE)).\
+            and_find(table_header_name_tokens).\
+            and_find(zero_or_more_tokens(tokens.TYPE_WHITESPACE)).\
+            and_find(token(tokens.TYPE_OP_DOUBLE_SQUARE_RIGHT_BRACKET)).\
+            and_find(zero_or_more_tokens(tokens.TYPE_WHITESPACE)).\
+            and_find(line_terminator_tokens)
+
+        return c2.value(), c2.pending_tokens
+
+    captured = capture_from(token_stream).find(single).or_find(double)
+    return TableHeaderElement(captured.value()), captured.pending_tokens
+
+
+def atomic_element(token_stream):
+    captured = capture_from(token_stream).\
+        find(string_token).\
+        or_find(token(tokens.TYPE_INTEGER)).\
+        or_find(token(tokens.TYPE_FLOAT)).\
+        or_find(token(tokens.TYPE_DATE)).\
+        or_find(token(tokens.TYPE_BOOLEAN))
+    return AtomicElement(captured.value('Expected an atomic primitive value')), captured.pending_tokens
+
+
+def punctuation_element(token_type):
+    def factory(ts):
+        c = capture_from(ts).find(token(token_type))
+        return PunctuationElement(c.value('Expected the punctuation element: {}'.format(token_type))), c.pending_tokens
+    return factory
+
+
+def value(token_stream):
+    captured = capture_from(token_stream).\
+        find(atomic_element).\
+        or_find(array_element).\
+        or_find(inline_table_element)
+    return captured.value('Expected a primitive value, array or an inline table'), captured.pending_tokens
+
+
+def array_internal(ts):
+
+    def zero(ts0):
+        c = capture_from(ts0).\
+            and_find(line_terminator_element).\
+            and_find(space_element).\
+            and_find(array_internal)
+        return c.value(), c.pending_tokens
+
+    def one(ts1):
+        c = capture_from(ts1).\
+            find(value).\
+            and_find(space_element).\
+            and_find(punctuation_element(tokens.TYPE_OP_COMMA)).\
+            and_find(space_element).\
+            and_find(line_terminator_element).\
+            and_find(space_element).\
+            and_find(array_internal)
+        return c.value(), c.pending_tokens
+
+    def two(ts2):
+        c = capture_from(ts2).\
+            find(value).\
+            and_find(space_element).\
+            and_find(punctuation_element(tokens.TYPE_OP_COMMA)).\
+            and_find(space_element).\
+            and_find(array_internal)
+        return c.value(), c.pending_tokens
+
+    def three(ts3):
+        c = capture_from(ts3).\
+            find(space_element).\
+            and_find(line_terminator_element)
+        return c.value(), c.pending_tokens
+
+    captured = capture_from(ts).find(zero).or_find(one).or_find(two).or_find(three).or_find(value).or_empty()
+    return captured.value(), captured.pending_tokens
+
+
+def array_element(token_stream):
+
+    def one(ts1):
+        ca = capture_from(ts1).\
+            find(punctuation_element(tokens.TYPE_OP_SQUARE_LEFT_BRACKET)).\
+            and_find(space_element).\
+            and_find(array_internal).\
+            and_find(space_element).\
+            and_find(punctuation_element(tokens.TYPE_OP_SQUARE_RIGHT_BRACKET))
+        return ca.value(), ca.pending_tokens
+
+    def two(ts2):
+        ca = capture_from(ts2).\
+            find(punctuation_element(tokens.TYPE_OP_SQUARE_LEFT_BRACKET)).\
+            and_find(space_element).\
+            and_find(array_internal).\
+            and_find(space_element).\
+            and_find(line_terminator_element).\
+            and_find(space_element).\
+            and_find(punctuation_element(tokens.TYPE_OP_SQUARE_RIGHT_BRACKET))
+        return ca.value(), ca.pending_tokens
+
+    captured = capture_from(token_stream).find(one).or_find(two)
+    return ArrayElement(captured.value()), captured.pending_tokens
+
+
+def inline_table_element(token_stream):
+
+    # InlineTableElement -> '{' Space InlineTableInternal Space '}'
+    # InlineTableKeyValuePair = STRING Space '=' Space Value
+    # InlineTableInternal -> InlineTableKeyValuePair Space ',' Space InlineTableInternal |
+    #     InlineTableKeyValuePair | Empty
+
+    def key_value(ts):
+        ca = capture_from(ts).\
+            find(string_element).\
+            and_find(space_element).\
+            and_find(punctuation_element(tokens.TYPE_OP_ASSIGNMENT)).\
+            and_find(space_element).\
+            and_find(value)
+        return ca.value(), ca.pending_tokens
+
+    def internal(ts):
+        def one(ts1):
+            c1 = capture_from(ts1).\
+                find(key_value).\
+                and_find(space_element).\
+                and_find(punctuation_element(tokens.TYPE_OP_COMMA)).\
+                and_find(space_element).\
+                and_find(internal)
+            return c1.value(), c1.pending_tokens
+
+        c = capture_from(ts).find(one).or_find(key_value).or_empty()
+        return c.value(), c.pending_tokens
+
+    captured = capture_from(token_stream).\
+        find(punctuation_element(tokens.TYPE_OP_CURLY_LEFT_BRACKET)).\
+        and_find(space_element).\
+        and_find(internal).\
+        and_find(space_element).\
+        and_find(punctuation_element(tokens.TYPE_OP_CURLY_RIGHT_BRACKET))
+
+    return InlineTableElement(captured.value()), captured.pending_tokens
+
+
+def key_value_pair(token_stream):
+    captured = capture_from(token_stream).\
+        find(space_element).\
+        and_find(string_element).\
+        and_find(space_element).\
+        and_find(punctuation_element(tokens.TYPE_OP_ASSIGNMENT)).\
+        and_find(space_element).\
+        and_find(value).\
+        and_find(space_element).\
+        and_find(line_terminator_element)
+    return captured.value(), captured.pending_tokens
+
+
+def table_body_elements(token_stream):
+
+    # TableBody -> KeyValuePair TableBody | EmptyLine TableBody | EmptyLine | KeyValuePair
+
+    def one(ts1):
+        c = capture_from(ts1).\
+            find(key_value_pair).\
+            and_find(table_body_elements)
+        return c.value(), c.pending_tokens
+
+    def two(ts2):
+        c = capture_from(ts2).\
+            find(empty_line_elements).\
+            and_find(table_body_elements)
+        return c.value(), c.pending_tokens
+
+    captured = capture_from(token_stream).\
+        find(one).\
+        or_find(two).\
+        or_find(empty_line_elements).\
+        or_find(key_value_pair)
+
+    return captured.value(), captured.pending_tokens
+
+
+def table_body_element(token_stream):
+    captured = capture_from(token_stream).find(table_body_elements)
+    return TableElement(captured.value()), captured.pending_tokens
+
+
+def empty_line_tokens(ts1):
+    c1 = capture_from(ts1).find(space_element).and_find(line_terminator_element)
+    return c1.value(), c1.pending_tokens
+
+
+def empty_line_elements(token_stream):
+    captured = capture_from(token_stream).find(empty_line_tokens)
+    return captured.value(), captured.pending_tokens
+
+
+def file_entry_element(token_stream):
+    captured = capture_from(token_stream).find(table_header_element).\
+        or_find(table_body_element)
+    return captured.value(), captured.pending_tokens
+
+
+def toml_file_elements(token_stream):
+
+    def one(ts1):
+        c1 = capture_from(ts1).find(file_entry_element).and_find(toml_file_elements)
+        return c1.value(), c1.pending_tokens
+
+    captured = capture_from(token_stream).find(one).or_find(file_entry_element).or_empty()
+    return captured.value(), captured.pending_tokens
diff --git a/pipenv/vendor/prettytoml/parser/recdesc.py b/pipenv/vendor/prettytoml/parser/recdesc.py
new file mode 100755
index 00000000..8731dba3
--- /dev/null
+++ b/pipenv/vendor/prettytoml/parser/recdesc.py
@@ -0,0 +1,114 @@
+from prettytoml.parser.errors import ParsingError
+from prettytoml.parser.tokenstream import TokenStream
+
+
+class Capturer:
+    """
+    Recursive-descent matching DSL. Yeah..
+    """
+
+    def __init__(self, token_stream, value=tuple(), dormant_error=None):
+        self._token_stream = token_stream
+        self._value = value
+        self._dormant_error = dormant_error
+
+    def find(self, finder):
+        """
+        Searches the token stream using the given finder.
+
+        `finder(ts)` is a function that accepts a `TokenStream` instance and returns `(element, pending_ts)`
+        where `element` is the found "something" or a sequence of "somethings", and `pending_ts` the unconsumed
+        `TokenStream`.
+
+        `finder(ts)` can raise `ParsingError` to indicate that it couldn't find anything, or
+        a `TokenStream.EndOfStream` to indicate a premature end of the TokenStream.
+
+        This method returns a Capturer instance that can be further used to find more and more "somethings". The value
+        at any given moment can be retrieved via the `Capturer.value()` method.
+        """
+
+        try:
+
+            # Execute finder!
+            element, pending_ts = finder(self._token_stream)
+
+            # If result is not a sequence, make it so
+            if not isinstance(element, (tuple, list)):
+                element = (element,)
+
+            # Return a Capturer with accumulated findings
+            return Capturer(pending_ts, value=self.value() + element)
+
+        except ParsingError as e:
+
+            # Failed to find, store error in returned value
+            return Capturer(self._token_stream, dormant_error=e)
+
+        except TokenStream.EndOfStream as e:
+
+            # Premature end of stream, store error in returned value
+            return Capturer(self._token_stream, dormant_error=e)
+
+    def value(self, parsing_expectation_msg=None):
+        """
+        Returns the accumulated values found as a sequence of values, or raises an encountered dormant error.
+
+        If parsing_expectation_msg is specified and a dormant_error is a ParsingError, the expectation message is used
+        instead in it.
+        """
+
+        if self._dormant_error:
+            if parsing_expectation_msg and isinstance(self._dormant_error, ParsingError):
+                raise ParsingError(parsing_expectation_msg, token=self._token_stream.head)
+            else:
+                raise self._dormant_error
+        return self._value
+
+    @property
+    def pending_tokens(self):
+        """
+        Returns a TokenStream with the pending tokens yet to be processed.
+        """
+        return self._token_stream
+
+    def or_find(self, finder):
+        """
+        If a dormant_error is present, try this new finder instead. If not, does nothing.
+        """
+        if self._dormant_error:
+            return Capturer(self._token_stream).find(finder)
+        else:
+            return self
+
+    def or_end_of_file(self):
+        """
+        Discards any errors if at end of the stream.
+        """
+        if isinstance(self._dormant_error, TokenStream.EndOfStream):
+            return Capturer(self.pending_tokens, value=self._value)
+        else:
+            return self
+
+    def or_empty(self):
+        """
+        Discards any previously-encountered dormant error.
+        """
+        if self._dormant_error:
+            return Capturer(self.pending_tokens, value=self._value)
+        else:
+            return self
+
+    def and_find(self, finder):
+        """
+        Accumulate new "somethings" to the stored value using the given finder.
+        """
+
+        if self._dormant_error:
+            return Capturer(self.pending_tokens, dormant_error=self._dormant_error)
+
+        return Capturer(self.pending_tokens, self.value()).find(finder)
+
+
+def capture_from(token_stream):
+    return Capturer(token_stream)
+
diff --git a/pipenv/vendor/prettytoml/parser/test_parser.py b/pipenv/vendor/prettytoml/parser/test_parser.py
new file mode 100755
index 00000000..40dd3dba
--- /dev/null
+++ b/pipenv/vendor/prettytoml/parser/test_parser.py
@@ -0,0 +1,156 @@
+from prettytoml.elements.array import ArrayElement
+from prettytoml.elements.atomic import AtomicElement
+from prettytoml.elements.metadata import CommentElement, NewlineElement, WhitespaceElement
+from prettytoml.elements.tableheader import TableHeaderElement
+from prettytoml.lexer import tokenize
+from prettytoml.parser import parser
+from prettytoml.parser.tokenstream import TokenStream
+
+
+def test_line_terminator_1():
+    tokens = tokenize('# Sup\n')
+    ts = TokenStream(tokens)
+    element, pending_ts = parser.line_terminator_element(ts)
+
+    assert isinstance(element, CommentElement)
+    assert pending_ts.offset == 2
+    assert ts.offset == 0
+
+
+def test_line_terminator_2():
+    tokens = tokenize('\n')
+    ts = TokenStream(tokens)
+    element, pending_ts = parser.line_terminator_element(ts)
+
+    assert isinstance(element, NewlineElement)
+    assert pending_ts.offset == 1
+    assert ts.offset == 0
+
+
+def test_space_1():
+    ts = TokenStream(tokenize('  noo'))
+    space_element, pending_ts = parser.space_element(ts)
+
+    assert isinstance(space_element, WhitespaceElement)
+    assert len(space_element.tokens) == 2
+    assert pending_ts.offset == 2
+    assert ts.offset == 0
+
+
+def test_space_2():
+    ts = TokenStream(tokenize(' noo'))
+    space_element, pending_ts = parser.space_element(ts)
+
+    assert isinstance(space_element, WhitespaceElement)
+    assert len(space_element.tokens) == 1
+    assert pending_ts.offset == 1
+    assert ts.offset == 0
+
+
+def test_space_3():
+    ts = TokenStream(tokenize('noo'))
+    space_element, pending_ts = parser.space_element(ts)
+
+    assert isinstance(space_element, WhitespaceElement)
+    assert len(space_element.tokens) == 0
+    assert pending_ts.offset == 0
+    assert ts.offset == 0
+
+
+def test_table_header():
+    ts = TokenStream(tokenize(" [ namez    . namey . namex ] \n other things"))
+    table_header_element, pending_tokens = parser.table_header_element(ts)
+
+    assert isinstance(table_header_element, TableHeaderElement)
+    assert len(pending_tokens) == 4
+
+
+def test_atomic_element():
+    e1, p1 = parser.atomic_element(TokenStream(tokenize('42 not')))
+    assert isinstance(e1, AtomicElement) and e1.value == 42
+    assert len(p1) == 2
+
+    e2, p2 = parser.atomic_element(TokenStream(tokenize('not 42')))
+    assert isinstance(e2, AtomicElement) and e2.value == 'not'
+    assert len(p2) == 2
+
+
+def test_array():
+    array_element, pending_ts = parser.array_element(TokenStream(tokenize('[ 3, 4, 5,6,7] ')))
+
+    assert isinstance(array_element, ArrayElement)
+    assert len(array_element) == 5
+    assert len(pending_ts) == 1
+
+
+def test_array_2():
+
+    text = """[
+  "alpha",
+  "omega"
+]"""
+
+    array_element, pending_ts = parser.array_element(TokenStream(tokenize(text)))
+
+    assert array_element[0] == 'alpha'
+    assert array_element[1] == 'omega'
+
+
+def test_empty_array():
+
+    text = '[]'
+
+    array_element, pending_ts = parser.array_element(TokenStream(tokenize(text)))
+
+    assert isinstance(array_element, ArrayElement)
+    assert pending_ts.at_end
+
+
+def test_inline_table():
+    inline_table, pending_ts = parser.inline_table_element(TokenStream(tokenize('{ "id"= 42,test = name} vroom')))
+
+    assert set(inline_table.keys()) == {'id', 'test'}
+    assert len(pending_ts) == 2
+    assert inline_table['id'] == 42
+    assert inline_table['test'] == 'name'
+
+
+def test_table_body():
+    table_body, pending_ts = parser.table_body_element(TokenStream(tokenize(' name= "test" # No way man!\nid =42\n vvv')))
+    assert set(table_body.keys()) == {'name', 'id'}
+    assert len(pending_ts) == 2
+    assert table_body['name'] == 'test'
+    assert table_body['id'] == 42
+
+
+def test_key_value_pair():
+    text = """hosts = [
+  "alpha",
+  "omega"
+]
+"""
+
+    parsed, pending_ts = parser.key_value_pair(TokenStream(tokenize(text)))
+
+    assert isinstance(parsed[1], AtomicElement)
+    assert isinstance(parsed[5], ArrayElement)
+
+
+def test_table_body_2():
+
+    text = """
+data = [ ["gamma", "delta"], [1, 2] ]
+
+# Line breaks are OK when inside arrays
+hosts = [
+  "alpha",
+  "omega"
+]
+
+str_multiline = wohoo
+"""
+
+    table_body, pending_ts = parser.table_body_element(TokenStream(tokenize(text)))
+
+    assert len(pending_ts) == 0
+
diff --git a/pipenv/vendor/prettytoml/parser/tokenstream.py b/pipenv/vendor/prettytoml/parser/tokenstream.py
new file mode 100755
index 00000000..2a2fdc25
--- /dev/null
+++ b/pipenv/vendor/prettytoml/parser/tokenstream.py
@@ -0,0 +1,39 @@
+
+class TokenStream:
+    """
+    An immutable subset of a token sequence
+    """
+
+    class EndOfStream(Exception):
+        pass
+
+    Nothing = tuple()
+
+    def __init__(self, _tokens, offset=0):
+        if isinstance(_tokens, tuple):
+            self._tokens = _tokens
+        else:
+            self._tokens = tuple(_tokens)
+        self._head_index = offset
+
+    def __len__(self):
+        return len(self._tokens) - self.offset
+
+    @property
+    def head(self):
+        try:
+            return self._tokens[self._head_index]
+        except IndexError:
+            raise TokenStream.EndOfStream
+
+    @property
+    def tail(self):
+        return TokenStream(self._tokens, offset=self._head_index+1)
+
+    @property
+    def offset(self):
+        return self._head_index
+
+    @property
+    def at_end(self):
+        return self.offset >= len(self._tokens)
diff --git a/pipenv/vendor/prettytoml/prettifier/__init__.py b/pipenv/vendor/prettytoml/prettifier/__init__.py
new file mode 100755
index 00000000..97ac1619
--- /dev/null
+++ b/pipenv/vendor/prettytoml/prettifier/__init__.py
@@ -0,0 +1,39 @@
+from . import deindentanonymoustable, tableindent, tableassignment
+from prettytoml.prettifier import tablesep, commentspace, linelength, tableentrysort
+
+"""
+    TOMLFile prettifiers
+
+    Each prettifier is a function that accepts a sequence of Element instances that make up a
+    TOML file and it is allowed to modify it as it pleases.
+"""
+
+
+UNIFORM_TABLE_INDENTATION = tableindent.table_entries_should_be_uniformly_indented
+UNIFORM_TABLE_ASSIGNMENT_SPACING = tableassignment.table_assignment_spacing
+ANONYMOUS_TABLE_INDENTATION = deindentanonymoustable.deindent_anonymous_table
+COMMENT_SPACING = commentspace.comment_space
+TABLE_SPACING = tablesep.table_separation
+LINE_LENGTH_ENFORCERS = linelength.line_length_limiter
+TABLE_ENTRY_SORTING = tableentrysort.sort_table_entries
+
+
+ALL = (
+    TABLE_SPACING,      # Must be before COMMENT_SPACING
+    COMMENT_SPACING,    # Must be after TABLE_SPACING
+    UNIFORM_TABLE_INDENTATION,
+    UNIFORM_TABLE_ASSIGNMENT_SPACING,
+    ANONYMOUS_TABLE_INDENTATION,
+    LINE_LENGTH_ENFORCERS,
+    TABLE_ENTRY_SORTING,
+)
+
+
+def prettify(toml_file_elements, prettifiers=ALL):
+    """
+    Prettifies a sequence of element instances according to pre-defined set of formatting rules.
+    """
+    elements = toml_file_elements[:]
+    for prettifier in prettifiers:
+        elements = prettifier(elements)
+    return elements
diff --git a/pipenv/vendor/prettytoml/prettifier/commentspace.py b/pipenv/vendor/prettytoml/prettifier/commentspace.py
new file mode 100755
index 00000000..fd549349
--- /dev/null
+++ b/pipenv/vendor/prettytoml/prettifier/commentspace.py
@@ -0,0 +1,35 @@
+
+from prettytoml.elements import traversal as t, factory as element_factory
+from prettytoml.elements.table import TableElement
+
+
+def comment_space(toml_file_elements):
+    """
+    Rule: Line-terminating comments should always be prefixed by a single tab character whitespace only.
+    """
+    elements = toml_file_elements[:]
+    for element in elements:
+        if isinstance(element, TableElement):
+            _do_table(element.sub_elements)
+    return elements
+
+
+def _do_table(table_elements):
+
+    # Iterator index
+    i = float('-inf')
+
+    def next_newline():
+        return t.find_following(table_elements, t.predicates.newline, i)
+
+    def next_comment():
+        return t.find_following(table_elements, t.predicates.comment, i)
+
+    def last_non_metadata():
+        return t.find_previous(table_elements, t.predicates.non_metadata, next_comment())
+
+    while next_comment() >= 0:
+        if i < last_non_metadata() < next_comment() < next_newline():
+            del table_elements[last_non_metadata()+1:next_comment()]
+            table_elements.insert(next_comment(), element_factory.create_whitespace_element(char='\t', length=1))
+        i = next_newline()
diff --git a/pipenv/vendor/prettytoml/prettifier/common.py b/pipenv/vendor/prettytoml/prettifier/common.py
new file mode 100755
index 00000000..dd1e01a2
--- /dev/null
+++ b/pipenv/vendor/prettytoml/prettifier/common.py
@@ -0,0 +1,54 @@
+
+from itertools import *
+from prettytoml.elements.common import TokenElement
+from prettytoml.elements.metadata import NewlineElement
+
+
+def text_to_elements(toml_text):
+    from ..lexer import tokenize
+    from ..parser import parse_tokens
+    return parse_tokens(tokenize(toml_text))
+
+
+def elements_to_text(toml_elements):
+    return ''.join(e.serialized() for e in toml_elements)
+
+
+def assert_prettifier_works(source_text, expected_text, prettifier_func):
+    assert expected_text == elements_to_text(prettifier_func(text_to_elements(source_text)))
+
+
+def lines(elements):
+    """
+    Splits a sequence of elements into a sub-sequence of each line.
+
+    A line is defined as a sequence of elements terminated by a NewlineElement.
+    """
+
+    def __next_line(es):
+        # Returns the next line and the remaining sequence of elements
+        line = tuple(takewhile(lambda e: not isinstance(e, NewlineElement), es))
+        line += (es[len(line)],)
+        return line, es[len(line):]
+
+    left_elements = tuple(elements)
+    while left_elements:
+        line, left_elements = __next_line(left_elements)
+        yield line
+
+
+def non_empty_elements(elements):
+    """
+    Filters out TokenElement instances with zero tokens.
+    """
+    return filter(lambda e: not (isinstance(e, TokenElement) and not e.tokens), elements)
+
+
+def index(predicate, seq):
+    """
+    Returns the index of the element satisfying the given predicate, or None.
+    """
+    try:
+        return next(i for (i, e) in enumerate(seq) if predicate(e))
+    except StopIteration:
+        return None
diff --git a/pipenv/vendor/prettytoml/prettifier/deindentanonymoustable.py b/pipenv/vendor/prettytoml/prettifier/deindentanonymoustable.py
new file mode 100755
index 00000000..a661f704
--- /dev/null
+++ b/pipenv/vendor/prettytoml/prettifier/deindentanonymoustable.py
@@ -0,0 +1,43 @@
+import operator
+from prettytoml.elements import traversal as t, traversal
+from itertools import *
+from functools import *
+from prettytoml.elements.metadata import WhitespaceElement
+from prettytoml.elements.table import TableElement
+from prettytoml.prettifier import common
+
+
+def deindent_anonymous_table(toml_file_elements):
+    """
+    Rule: Anonymous table should never be indented.
+    """
+
+    anonymous_table_index = _find_anonymous_table(toml_file_elements)
+    if anonymous_table_index is None:
+        return toml_file_elements
+
+    return toml_file_elements[:anonymous_table_index] + \
+               [_unindent_table(toml_file_elements[anonymous_table_index])] + \
+               toml_file_elements[anonymous_table_index+1:]
+
+
+def _unindent_table(table_element):
+    table_lines = tuple(common.lines(table_element.sub_elements))
+    unindented_lines = tuple(tuple(dropwhile(lambda e: isinstance(e, WhitespaceElement), line)) for line in table_lines)
+    return TableElement(reduce(operator.concat, unindented_lines))
+
+
+def _find_anonymous_table(toml_file_elements):
+    """
+    Finds and returns the index of the TableElement comprising the anonymous table or None.
+    """
+
+    first_table_index = common.index(t.predicates.table, toml_file_elements)
+    first_table_header_index = common.index(t.predicates.table_header, toml_file_elements)
+
+    if first_table_header_index is None:
+        return first_table_index
+    elif first_table_index < first_table_header_index:
+        return first_table_index
+
+
diff --git a/pipenv/vendor/prettytoml/prettifier/linelength.py b/pipenv/vendor/prettytoml/prettifier/linelength.py
new file mode 100755
index 00000000..67d3a112
--- /dev/null
+++ b/pipenv/vendor/prettytoml/prettifier/linelength.py
@@ -0,0 +1,62 @@
+import operator
+from prettytoml import tokens
+from prettytoml.prettifier import common
+from prettytoml.elements import traversal as t, factory as element_factory
+from prettytoml.elements.array import ArrayElement
+from prettytoml.elements.atomic import AtomicElement
+from prettytoml.elements.inlinetable import InlineTableElement
+from prettytoml.elements.table import TableElement
+from functools import *
+
+
+MAXIMUM_LINE_LENGTH = 120
+
+
+def line_length_limiter(toml_file_elements):
+    """
+    Rule: Lines whose lengths exceed 120 characters whose values are strings, arrays should have the array or
+    string value broken onto multiple lines
+    """
+    return tuple(_fixed_table(e) if isinstance(e, TableElement) else e for e in toml_file_elements)
+
+
+def _fixed_table(table_element):
+    """
+    Returns a new TableElement.
+    """
+    assert isinstance(table_element, TableElement)
+    lines = tuple(common.lines(table_element.sub_elements))
+    fixed_lines = tuple(_fixed_line(l) if _line_length(l) > MAXIMUM_LINE_LENGTH else l for l in lines)
+    return TableElement(sub_elements=tuple(reduce(operator.concat, fixed_lines)))
+
+
+def _line_length(line_elements):
+    """
+    Returns the character length of the serialized elements of the given line.
+    """
+    return sum(len(e.serialized()) for e in line_elements)
+
+
+def _fixed_line(line_elements):
+
+    def line_value_index():
+        # Returns index of value element in the line
+        key_index = t.find_following(line_elements, t.predicates.non_metadata)
+        return t.find_following(line_elements, t.predicates.non_metadata, key_index)
+
+    def multiline_equivalent(element):
+        if isinstance(element, AtomicElement) and tokens.is_string(element.first_token):
+            return element_factory.create_multiline_string(element.value, MAXIMUM_LINE_LENGTH)
+        elif isinstance(element, ArrayElement):
+            element.turn_into_multiline()
+            return element
+        else:
+            return element
+
+    line_elements = tuple(line_elements)
+    value_index = line_value_index()
+    if value_index >= 0:
+        return line_elements[:value_index] + (multiline_equivalent(line_elements[value_index]),) + \
+            line_elements[value_index+1:]
+    else:
+        return line_elements
diff --git a/pipenv/vendor/prettytoml/prettifier/tableassignment.py b/pipenv/vendor/prettytoml/prettifier/tableassignment.py
new file mode 100755
index 00000000..1d35d698
--- /dev/null
+++ b/pipenv/vendor/prettytoml/prettifier/tableassignment.py
@@ -0,0 +1,40 @@
+
+from prettytoml.elements import traversal as t, factory as element_factory
+
+
+def table_assignment_spacing(toml_file_elements):
+    """
+    Rule: Every key and value pair in any table should be separated the triplet
+    (single space character, an assignment character =, single space character)
+    """
+    elements = toml_file_elements[:]
+    for table_element in (e for e in elements if t.predicates.table(e)):
+        _do_table(table_element)
+    return elements
+
+
+def _do_table(table_element):
+
+    elements = table_element.sub_elements
+
+    # Our iterator index
+    i = float('-inf')
+
+    def next_key():
+        return t.find_following(elements, t.predicates.non_metadata, i)
+
+    def next_assignment():
+        return t.find_following(elements, t.predicates.op_assignment, next_key())
+
+    def next_value():
+        return t.find_following(elements, t.predicates.non_metadata, next_assignment())
+
+    while next_key() >= 0:
+
+        del elements[next_key()+1:next_assignment()]
+        del elements[next_assignment()+1:next_value()]
+
+        elements.insert(next_assignment(), element_factory.create_whitespace_element(1))
+        elements.insert(next_value(), element_factory.create_whitespace_element(1))
+
+        i = t.find_following(elements, t.predicates.newline, i)
diff --git a/pipenv/vendor/prettytoml/prettifier/tableentrysort.py b/pipenv/vendor/prettytoml/prettifier/tableentrysort.py
new file mode 100755
index 00000000..8cbd307b
--- /dev/null
+++ b/pipenv/vendor/prettytoml/prettifier/tableentrysort.py
@@ -0,0 +1,38 @@
+import operator
+from prettytoml import tokens
+from prettytoml.elements.common import TokenElement
+from prettytoml.elements.table import TableElement
+from prettytoml.prettifier import common
+from functools import *
+
+
+def sort_table_entries(toml_file_elements):
+    """
+    Rule: Entries within a single table should be ordered lexicographically by key
+    """
+    return [_sorted_table(element) if isinstance(element, TableElement) else element for element in toml_file_elements]
+
+
+def _line_key(line_elements):
+    """
+    Given a sequence of elements comprising a single line, returns an orderable value to use in ordering lines.
+    """
+    for e in line_elements:
+        if isinstance(e, TokenElement) and tokens.is_string(e.first_token):
+            return e.primitive_value
+    return 'z' * 10     # Metadata lines should be at the end
+
+
+def _sorted_table(table):
+    """
+    Returns another TableElement where the table entries are sorted lexicographically by key.
+    """
+    assert isinstance(table, TableElement)
+
+    # Discarding TokenElements with no tokens in them
+    table_elements = common.non_empty_elements(table.sub_elements)
+    lines = tuple(common.lines(table_elements))
+    sorted_lines = sorted(lines, key=_line_key)
+    sorted_elements = reduce(operator.concat, sorted_lines)
+
+    return TableElement(sorted_elements)
diff --git a/pipenv/vendor/prettytoml/prettifier/tableindent.py b/pipenv/vendor/prettytoml/prettifier/tableindent.py
new file mode 100755
index 00000000..3b60883d
--- /dev/null
+++ b/pipenv/vendor/prettytoml/prettifier/tableindent.py
@@ -0,0 +1,49 @@
+from prettytoml import tokens
+from prettytoml.elements import traversal as t, factory as element_factory
+from prettytoml.tokens import py2toml
+
+
+def table_entries_should_be_uniformly_indented(toml_file_elements):
+    """
+    Rule: Nth-level table sections should be indented by (N-1)*2 spaces
+    """
+    elements = toml_file_elements[:]
+    for (i, e) in enumerate(elements):
+        if t.predicates.table_header(e):
+            table = elements[t.find_following(elements, t.predicates.table, i)]
+            _do_table_header(e)
+            _do_table(table, len(e.names))
+    return elements
+
+
+def _do_table_header(table_header):
+    indent_start = 0
+    indent_end = next(i for (i, token) in enumerate(table_header.tokens) if token.type != tokens.TYPE_WHITESPACE)
+
+    del table_header.tokens[indent_start:indent_end]
+    table_header.tokens.insert(0, py2toml.create_whitespace(' ' * ((len(table_header.names)-1) * 2)))
+
+
+def _do_table(table_element, table_level):
+
+    elements = table_element.sub_elements
+
+    # Iterator index
+    i = float('-inf')
+
+    def first_indent():
+        return t.find_following(elements, t.predicates.whitespace, i)
+
+    def next_non_metadata():
+        return t.find_following(elements, t.predicates.non_metadata, i)
+
+    def next_newline():
+        return t.find_following(elements, t.predicates.newline, next_non_metadata())
+
+    while next_non_metadata() >= 0:
+        if first_indent() >= 0:
+            del elements[first_indent():next_non_metadata()]
+
+        elements.insert(next_non_metadata(), element_factory.create_whitespace_element((table_level-1)*2))
+
+        i = next_newline()
diff --git a/pipenv/vendor/prettytoml/prettifier/tablesep.py b/pipenv/vendor/prettytoml/prettifier/tablesep.py
new file mode 100755
index 00000000..059007f3
--- /dev/null
+++ b/pipenv/vendor/prettytoml/prettifier/tablesep.py
@@ -0,0 +1,31 @@
+
+from prettytoml.elements import traversal as t, factory as element_factory
+from prettytoml.elements.metadata import WhitespaceElement, NewlineElement
+from prettytoml.elements.table import TableElement
+
+
+def table_separation(toml_file_elements):
+    """
+    Rule: Tables should always be separated by an empty line.
+    """
+    elements = toml_file_elements[:]
+    for element in elements:
+        if isinstance(element, TableElement):
+            _do_table(element.sub_elements)
+    return elements
+
+
+def _do_table(table_elements):
+
+    while table_elements and isinstance(table_elements[-1], WhitespaceElement):
+        del table_elements[-1]
+
+    if not table_elements:
+        return
+
+    if isinstance(table_elements[-1], NewlineElement):
+        last_non_metadata_i = t.find_previous(table_elements, t.predicates.non_metadata)
+        del table_elements[last_non_metadata_i+1:]
+
+    table_elements.append(element_factory.create_newline_element())
+    table_elements.append(element_factory.create_newline_element())
diff --git a/pipenv/vendor/prettytoml/prettifier/test_commentspace.py b/pipenv/vendor/prettytoml/prettifier/test_commentspace.py
new file mode 100755
index 00000000..53d96d76
--- /dev/null
+++ b/pipenv/vendor/prettytoml/prettifier/test_commentspace.py
@@ -0,0 +1,28 @@
+
+from .common import assert_prettifier_works
+from .commentspace import comment_space
+
+
+def test_comment_space():
+
+    toml_text = """
+my_key = string
+id = 12 # My special ID
+
+[section.name]
+headerk = false
+# Own-line comment should stay the same
+other_key = "value"
+"""
+
+    expected_toml_text = """
+my_key = string
+id = 12\t# My special ID
+
+[section.name]
+headerk = false
+# Own-line comment should stay the same
+other_key = "value"
+"""
+
+    assert_prettifier_works(toml_text, expected_toml_text, comment_space)
diff --git a/pipenv/vendor/prettytoml/prettifier/test_deindentanonymoustable.py b/pipenv/vendor/prettytoml/prettifier/test_deindentanonymoustable.py
new file mode 100755
index 00000000..10a6d2c8
--- /dev/null
+++ b/pipenv/vendor/prettytoml/prettifier/test_deindentanonymoustable.py
@@ -0,0 +1,22 @@
+
+"""
+    This testing module depends on all the other modules.
+"""
+
+from .deindentanonymoustable import deindent_anonymous_table
+from .common import assert_prettifier_works
+
+
+def test_anon_table_indent():
+    toml_text = """
+    key=value
+          another_key =44
+noname = me
+"""
+
+    expected_toml_text = """
+key=value
+another_key =44
+noname = me
+"""
+    assert_prettifier_works(toml_text, expected_toml_text, deindent_anonymous_table)
diff --git a/pipenv/vendor/prettytoml/prettifier/test_linelength.py b/pipenv/vendor/prettytoml/prettifier/test_linelength.py
new file mode 100755
index 00000000..e4ab8fcb
--- /dev/null
+++ b/pipenv/vendor/prettytoml/prettifier/test_linelength.py
@@ -0,0 +1,39 @@
+from .linelength import line_length_limiter
+from .common import assert_prettifier_works, elements_to_text, text_to_elements
+import pytoml
+
+
+def test_splitting_string():
+    toml_text = """
+k = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. In et lectus nec erat condimentum scelerisque gravida sed ipsum. Mauris non orci tincidunt, viverra enim eget, tincidunt orci. Sed placerat nibh vitae ante maximus egestas maximus eu quam. Praesent vehicula mauris vestibulum, mattis turpis sollicitudin, aliquam felis. Pellentesque volutpat pharetra purus vel finibus. Vestibulum sed tempus dui. Maecenas auctor sit amet diam et porta. Morbi id libero at elit ultricies porta vel vitae nullam. "
+"""
+
+    expected_toml_text = """
+k = \"\"\"
+Lorem ipsum dolor sit amet, consectetur adipiscing elit. In et lectus nec erat condimentum scelerisque gravida sed \\
+ipsum. Mauris non orci tincidunt, viverra enim eget, tincidunt orci. Sed placerat nibh vitae ante maximus egestas \\
+maximus eu quam. Praesent vehicula mauris vestibulum, mattis turpis sollicitudin, aliquam felis. Pellentesque volutpat \\
+pharetra purus vel finibus. Vestibulum sed tempus dui. Maecenas auctor sit amet diam et porta. Morbi id libero at elit \\
+ultricies porta vel vitae nullam. \"\"\"
+"""
+    assert_prettifier_works(toml_text, expected_toml_text, line_length_limiter)
+
+
+def test_splitting_array():
+    toml_text = """
+
+somethingweird = false
+
+[section]
+k = [4, 8, 15, 16, 23, 42, 4, 8, 15, 16, 23, 42, 4, 8, 15, 16, 23, 42, 4, 8, 15, 16, 23, 42, 4, 8, 15, 16, 23, 42, 4, 8, 15, 16, 23, 42, 4, 8, 15, 16, 23, 42]
+
+
+[data]
+id = 12
+
+"""
+
+    prettified = elements_to_text(line_length_limiter(text_to_elements(toml_text)))
+
+    assert pytoml.loads(prettified) == pytoml.loads(toml_text)
+    assert all(len(line) < 120 for line in prettified.split('\n'))
diff --git a/pipenv/vendor/prettytoml/prettifier/test_tableassignment.py b/pipenv/vendor/prettytoml/prettifier/test_tableassignment.py
new file mode 100755
index 00000000..82fcc174
--- /dev/null
+++ b/pipenv/vendor/prettytoml/prettifier/test_tableassignment.py
@@ -0,0 +1,29 @@
+
+from .tableassignment import table_assignment_spacing
+from .common import assert_prettifier_works
+
+
+def test_table_assignment_spacing():
+    toml_text = """
+    key1= "my value"
+    key2 =42
+    keys        =   [4, 5,1]
+
+    [section]
+    key1= "my value"
+    key2 =42
+    keys        =   [4, 5,1]
+"""
+
+    expected_prettified = """
+    key1 = "my value"
+    key2 = 42
+    keys = [4, 5,1]
+
+    [section]
+    key1 = "my value"
+    key2 = 42
+    keys = [4, 5,1]
+"""
+
+    assert_prettifier_works(toml_text, expected_prettified, table_assignment_spacing)
diff --git a/pipenv/vendor/prettytoml/prettifier/test_tableentrysort.py b/pipenv/vendor/prettytoml/prettifier/test_tableentrysort.py
new file mode 100755
index 00000000..0cc39f78
--- /dev/null
+++ b/pipenv/vendor/prettytoml/prettifier/test_tableentrysort.py
@@ -0,0 +1,45 @@
+
+from .tableentrysort import sort_table_entries
+from .common import assert_prettifier_works
+
+
+def test_table_sorting():
+    toml_text = """description = ""
+firstname = "adnan"
+lastname = "fatayerji"
+git_aydo = ""
+groups = ["sales", "dubai", "mgmt"]
+skype = ""
+emails = ["adnan@incubaid.com",
+ "fatayera@incubaid.com",
+ "adnan.fatayerji@incubaid.com",
+ "adnan@greenitglobe.com",
+ "fatayera@greenitglobe.com",
+ "adnan.fatayerji@greenitglobe.com"]
+# I really like this table
+id = "fatayera"
+git_github = ""
+telegram = "971507192009"
+mobiles = ["971507192009"]
+"""
+
+    prettified = """description = ""
+emails = ["adnan@incubaid.com",
+ "fatayera@incubaid.com",
+ "adnan.fatayerji@incubaid.com",
+ "adnan@greenitglobe.com",
+ "fatayera@greenitglobe.com",
+ "adnan.fatayerji@greenitglobe.com"]
+firstname = "adnan"
+git_aydo = ""
+git_github = ""
+groups = ["sales", "dubai", "mgmt"]
+# I really like this table
+id = "fatayera"
+lastname = "fatayerji"
+mobiles = ["971507192009"]
+skype = ""
+telegram = "971507192009"
+"""
+
+    assert_prettifier_works(toml_text, prettified, sort_table_entries)
diff --git a/pipenv/vendor/prettytoml/prettifier/test_tableindent.py b/pipenv/vendor/prettytoml/prettifier/test_tableindent.py
new file mode 100755
index 00000000..a37f73a7
--- /dev/null
+++ b/pipenv/vendor/prettytoml/prettifier/test_tableindent.py
@@ -0,0 +1,25 @@
+
+from .tableindent import table_entries_should_be_uniformly_indented
+from .common import assert_prettifier_works
+
+
+def test_table_entries_should_be_uniformly_indented():
+    toml_text = """
+    [firstlevel]
+hello = "my name"
+    my_id = 12
+
+    [firstlevel.secondlevel]
+      my_truth = False
+"""
+
+    expected_toml_text = """
+[firstlevel]
+hello = "my name"
+my_id = 12
+
+  [firstlevel.secondlevel]
+  my_truth = False
+"""
+
+    assert_prettifier_works(toml_text, expected_toml_text, table_entries_should_be_uniformly_indented)
diff --git a/pipenv/vendor/prettytoml/prettifier/test_tablesep.py b/pipenv/vendor/prettytoml/prettifier/test_tablesep.py
new file mode 100755
index 00000000..a8a81d52
--- /dev/null
+++ b/pipenv/vendor/prettytoml/prettifier/test_tablesep.py
@@ -0,0 +1,34 @@
+
+from .tablesep import table_separation
+from .common import assert_prettifier_works
+
+
+def test_table_separation():
+
+    toml_text = """key1 = "value1"
+key2 = 22
+[section]
+k = false
+m= "true"
+
+
+
+[another.section]
+l = "t"
+creativity = "on vacation"
+"""
+
+    expected_toml_text = """key1 = "value1"
+key2 = 22
+
+[section]
+k = false
+m= "true"
+
+[another.section]
+l = "t"
+creativity = "on vacation"
+
+"""
+
+    assert_prettifier_works(toml_text, expected_toml_text, table_separation)
diff --git a/pipenv/vendor/prettytoml/test_prettifier.py b/pipenv/vendor/prettytoml/test_prettifier.py
new file mode 100755
index 00000000..f702fb01
--- /dev/null
+++ b/pipenv/vendor/prettytoml/test_prettifier.py
@@ -0,0 +1,12 @@
+
+from .prettifier import prettify
+from .prettifier.common import assert_prettifier_works
+import pytoml
+
+
+def test_prettifying_against_humanly_verified_sample():
+    toml_source = open('sample.toml').read()
+    expected = open('sample-prettified.toml').read()
+
+    assert_prettifier_works(toml_source, expected, prettify)
+    assert pytoml.loads(toml_source) == pytoml.loads(expected)
diff --git a/pipenv/vendor/prettytoml/test_util.py b/pipenv/vendor/prettytoml/test_util.py
new file mode 100755
index 00000000..b741abfa
--- /dev/null
+++ b/pipenv/vendor/prettytoml/test_util.py
@@ -0,0 +1,22 @@
+from prettytoml.util import is_sequence_like, is_dict_like, chunkate_string
+
+
+def test_is_sequence_like():
+    assert is_sequence_like([1, 3, 4])
+    assert not is_sequence_like(42)
+    
+
+def test_is_dict_like():
+    assert is_dict_like({'name': False})
+    assert not is_dict_like(42)
+    assert not is_dict_like([4, 8, 15])
+
+
+def test_chunkate_string():
+
+    text = """Lorem ipsum dolor sit amet, consectetur adipiscing elit. In et lectus nec erat condimentum scelerisque gravida sed ipsum. Mauris non orci tincidunt, viverra enim eget, tincidunt orci. Sed placerat nibh vitae ante maximus egestas maximus eu quam. Praesent vehicula mauris vestibulum, mattis turpis sollicitudin, aliquam felis. Pellentesque volutpat pharetra purus vel finibus. Vestibulum sed tempus dui. Maecenas auctor sit amet diam et porta. Morbi id libero at elit ultricies porta vel vitae nullam. """
+
+    chunks = chunkate_string(text, 50)
+
+    assert ''.join(chunks) == text
+    assert all(len(chunk) <= 50 for chunk in chunks)
diff --git a/pipenv/vendor/prettytoml/tokens/__init__.py b/pipenv/vendor/prettytoml/tokens/__init__.py
new file mode 100755
index 00000000..a5b2e9ae
--- /dev/null
+++ b/pipenv/vendor/prettytoml/tokens/__init__.py
@@ -0,0 +1,136 @@
+
+"""
+TOML lexical tokens.
+"""
+
+class TokenType:
+    """
+    A TokenType is a concrete type of a source token along with a defined priority and a higher-order kind.
+
+    The priority will be used in determining the tokenization behaviour of the lexer in the following manner:
+    whenever more than one token is recognizable as the next possible token and they are all of equal source
+    length, this priority is going to be used to break the tie by favoring the token type of the lowest priority
+    value. A TokenType instance is naturally ordered by its priority.
+    """
+
+    def __init__(self, name, priority, is_metadata):
+        self._priority = priority
+        self._name = name
+        self._is_metadata = is_metadata
+
+    @property
+    def is_metadata(self):
+        return self._is_metadata
+
+    @property
+    def priority(self):
+        return self._priority
+
+    def __repr__(self):
+        return "{}-{}".format(self.priority, self._name)
+
+    def __lt__(self, other):
+        return isinstance(other, TokenType) and self._priority < other.priority
+
+# Possible types of tokens
+TYPE_BOOLEAN = TokenType('boolean', 0, is_metadata=False)
+TYPE_INTEGER = TokenType('integer', 0, is_metadata=False)
+TYPE_OP_COMMA = TokenType('comma', 0, is_metadata=True)
+TYPE_OP_SQUARE_LEFT_BRACKET = TokenType('square_left_bracket', 0, is_metadata=True)
+TYPE_OP_SQUARE_RIGHT_BRACKET = TokenType('square_right_bracket', 0, is_metadata=True)
+TYPE_OP_CURLY_LEFT_BRACKET = TokenType('curly_left_bracket', 0, is_metadata=True)
+TYPE_OP_CURLY_RIGHT_BRACKET = TokenType('curly_right_bracket', 0, is_metadata=True)
+TYPE_OP_ASSIGNMENT = TokenType('assignment', 0, is_metadata=True)
+TYPE_OP_DOUBLE_SQUARE_LEFT_BRACKET = TokenType('double_square_left_bracket', 0, is_metadata=True)
+TYPE_OP_DOUBLE_SQUARE_RIGHT_BRACKET = TokenType('double_square_right_bracket', 0, is_metadata=True)
+TYPE_FLOAT = TokenType('float', 1, is_metadata=False)
+TYPE_DATE = TokenType('date', 40, is_metadata=False)
+TYPE_OPT_DOT = TokenType('dot', 40, is_metadata=True)
+TYPE_BARE_STRING = TokenType('bare_string', 50, is_metadata=False)
+TYPE_STRING = TokenType('string', 90, is_metadata=False)
+TYPE_MULTILINE_STRING = TokenType('multiline_string', 90, is_metadata=False)
+TYPE_LITERAL_STRING = TokenType('literal_string', 90, is_metadata=False)
+TYPE_MULTILINE_LITERAL_STRING = TokenType('multiline_literal_string', 90, is_metadata=False)
+TYPE_NEWLINE = TokenType('newline', 91, is_metadata=True)
+TYPE_WHITESPACE = TokenType('whitespace', 93, is_metadata=True)
+TYPE_COMMENT = TokenType('comment', 95, is_metadata=True)
+
+
+def is_operator(token):
+    """
+    Returns True if the given token is an operator token.
+    """
+    return token.type in (
+        TYPE_OP_COMMA,
+        TYPE_OP_SQUARE_LEFT_BRACKET,
+        TYPE_OP_SQUARE_RIGHT_BRACKET,
+        TYPE_OP_DOUBLE_SQUARE_LEFT_BRACKET,
+        TYPE_OP_DOUBLE_SQUARE_RIGHT_BRACKET,
+        TYPE_OP_CURLY_LEFT_BRACKET,
+        TYPE_OP_CURLY_RIGHT_BRACKET,
+        TYPE_OP_ASSIGNMENT,
+        TYPE_OPT_DOT,
+    )
+
+
+def is_string(token):
+    return token.type in (
+        TYPE_STRING,
+        TYPE_MULTILINE_STRING,
+        TYPE_LITERAL_STRING,
+        TYPE_BARE_STRING,
+        TYPE_MULTILINE_LITERAL_STRING
+    )
+
+
+class Token:
+    """
+    A token/lexeme in a TOML source file.
+
+    A Token instance is naturally ordered by its type.
+    """
+
+    def __init__(self, _type, source_substring, col=None, row=None):
+        self._source_substring = source_substring
+        self._type = _type
+        self._col = col
+        self._row = row
+
+    def __eq__(self, other):
+        if not isinstance(other, Token):
+            return False
+        return self.source_substring == other.source_substring and self.type == other.type
+
+    @property
+    def col(self):
+        """
+        Column number (1-indexed).
+        """
+        return self._col
+
+    @property
+    def row(self):
+        """
+        Row number (1-indexed).
+        """
+        return self._row
+
+    @property
+    def type(self):
+        """
+        One of of the TOKEN_TYPE_* constants.
+        """
+        return self._type
+
+    @property
+    def source_substring(self):
+        """
+        The substring of the initial source file containing this token.
+        """
+        return self._source_substring
+
+    def __lt__(self, other):
+        return isinstance(other, Token) and self.type < other.type
+
+    def __repr__(self):
+        return "{}: {}".format(self.type, self.source_substring)
diff --git a/pipenv/vendor/prettytoml/tokens/errors.py b/pipenv/vendor/prettytoml/tokens/errors.py
new file mode 100755
index 00000000..d40cb8e9
--- /dev/null
+++ b/pipenv/vendor/prettytoml/tokens/errors.py
@@ -0,0 +1,13 @@
+from prettytoml.errors import TOMLError
+
+
+class DeserializationError(TOMLError):
+    pass
+
+
+class BadEscapeCharacter(TOMLError):
+    pass
+
+
+class MalformedDateError(DeserializationError):
+    pass
diff --git a/pipenv/vendor/prettytoml/tokens/py2toml.py b/pipenv/vendor/prettytoml/tokens/py2toml.py
new file mode 100755
index 00000000..3db97b44
--- /dev/null
+++ b/pipenv/vendor/prettytoml/tokens/py2toml.py
@@ -0,0 +1,134 @@
+
+"""
+A converter of python values to TOML Token instances.
+"""
+import codecs
+import datetime
+import six
+import strict_rfc3339
+import timestamp
+from prettytoml import tokens
+import re
+from prettytoml.elements.metadata import NewlineElement
+from prettytoml.errors import TOMLError
+from prettytoml.tokens import Token
+from prettytoml.util import chunkate_string
+
+
+class NotPrimitiveError(TOMLError):
+    pass
+
+
+_operator_tokens_by_type = {
+    tokens.TYPE_OP_SQUARE_LEFT_BRACKET: tokens.Token(tokens.TYPE_OP_SQUARE_LEFT_BRACKET, u'['),
+    tokens.TYPE_OP_SQUARE_RIGHT_BRACKET: tokens.Token(tokens.TYPE_OP_SQUARE_RIGHT_BRACKET, u']'),
+    tokens.TYPE_OP_DOUBLE_SQUARE_LEFT_BRACKET: tokens.Token(tokens.TYPE_OP_DOUBLE_SQUARE_LEFT_BRACKET, u'[['),
+    tokens.TYPE_OP_DOUBLE_SQUARE_RIGHT_BRACKET: tokens.Token(tokens.TYPE_OP_DOUBLE_SQUARE_RIGHT_BRACKET, u']]'),
+    tokens.TYPE_OP_COMMA: tokens.Token(tokens.TYPE_OP_COMMA, u','),
+    tokens.TYPE_NEWLINE: tokens.Token(tokens.TYPE_NEWLINE, u'\n'),
+    tokens.TYPE_OPT_DOT: tokens.Token(tokens.TYPE_OPT_DOT, u'.'),
+}
+
+
+def operator_token(token_type):
+    return _operator_tokens_by_type[token_type]
+
+
+def create_primitive_token(value, multiline_strings_allowed=True):
+    """
+    Creates and returns a single token for the given primitive atomic value.
+
+    Raises NotPrimitiveError when the given value is not a primitive atomic value
+    """
+    if value is None:
+        return create_primitive_token('')
+    elif isinstance(value, bool):
+        return tokens.Token(tokens.TYPE_BOOLEAN, u'true' if value else u'false')
+    elif isinstance(value, int):
+        return tokens.Token(tokens.TYPE_INTEGER, u'{}'.format(value))
+    elif isinstance(value, float):
+        return tokens.Token(tokens.TYPE_FLOAT, u'{}'.format(value))
+    elif isinstance(value, (datetime.datetime, datetime.date, datetime.time)):
+        ts = timestamp(value) // 1000
+        return tokens.Token(tokens.TYPE_DATE, strict_rfc3339.timestamp_to_rfc3339_utcoffset(ts))
+    elif isinstance(value, six.string_types):
+        return create_string_token(value, multiline_strings_allowed=multiline_strings_allowed)
+
+    raise NotPrimitiveError("{} of type {}".format(value, type(value)))
+
+
+_bare_string_regex = re.compile('^[a-zA-Z0-9_-]*$')
+
+
+def create_string_token(text, bare_string_allowed=False, multiline_strings_allowed=True):
+    """
+    Creates and returns a single string token.
+
+    Raises ValueError on non-string input.
+    """
+
+    if not isinstance(text, six.string_types):
+        raise ValueError('Given value must be a string')
+
+    if text == '':
+        return tokens.Token(tokens.TYPE_STRING, '""'.format(_escape_single_line_quoted_string(text)))
+    elif bare_string_allowed and _bare_string_regex.match(text):
+        return tokens.Token(tokens.TYPE_BARE_STRING, text)
+    elif multiline_strings_allowed and (len(tuple(c for c in text if c == '\n')) >= 2 or len(text) > 80):
+        # If containing two or more newlines or is longer than 80 characters we'll use the multiline string format
+        return _create_multiline_string_token(text)
+    else:
+        return tokens.Token(tokens.TYPE_STRING, '"{}"'.format(_escape_single_line_quoted_string(text)))
+
+
+def _escape_single_line_quoted_string(text):
+    if six.PY2:
+        return text.encode('unicode-escape').encode('string-escape').replace('"', '\\"').replace("\\'", "'")
+    else:
+        return codecs.encode(text, 'unicode-escape').decode().replace('"', '\\"')
+
+
+def _create_multiline_string_token(text):
+    escaped = text.replace(u'"""', u'\"\"\"')
+    if len(escaped) > 50:
+        return tokens.Token(tokens.TYPE_MULTILINE_STRING, u'"""\n{}\\\n"""'.format(_break_long_text(escaped)))
+    else:
+        return tokens.Token(tokens.TYPE_MULTILINE_STRING, u'"""{}"""'.format(escaped))
+
+
+def _break_long_text(text, maximum_length=75):
+    """
+    Breaks into lines of 75 character maximum length that are terminated by a backslash.
+    """
+
+    def next_line(remaining_text):
+
+        # Returns a line and the remaining text
+
+        if '\n' in remaining_text and remaining_text.index('\n') < maximum_length:
+            i = remaining_text.index('\n')
+            return remaining_text[:i+1], remaining_text[i+2:]
+        elif len(remaining_text) > maximum_length and ' ' in remaining_text:
+            i = remaining_text[:maximum_length].rfind(' ')
+            return remaining_text[:i+1] + '\\\n', remaining_text[i+2:]
+        else:
+            return remaining_text, ''
+
+    remaining_text = text
+    lines = []
+    while remaining_text:
+        line, remaining_text = next_line(remaining_text)
+        lines += [line]
+
+    return ''.join(lines)
+
+
+def create_whitespace(source_substring):
+    return Token(tokens.TYPE_WHITESPACE, source_substring)
+
+
+def create_multiline_string(text, maximum_line_length=120):
+    def escape(t):
+        return t.replace(u'"""', six.u(r'\"\"\"'))
+    source_substring = u'"""\n{}"""'.format(u'\\\n'.join(chunkate_string(escape(text), maximum_line_length)))
+    return Token(tokens.TYPE_MULTILINE_STRING, source_substring)
diff --git a/pipenv/vendor/prettytoml/tokens/test_py2toml.py b/pipenv/vendor/prettytoml/tokens/test_py2toml.py
new file mode 100755
index 00000000..0d029c5d
--- /dev/null
+++ b/pipenv/vendor/prettytoml/tokens/test_py2toml.py
@@ -0,0 +1,69 @@
+import datetime
+
+import strict_rfc3339
+
+from prettytoml import tokens
+from prettytoml.tokens import py2toml
+
+
+def test_string():
+    assert py2toml.create_string_token('fawzy', bare_string_allowed=True) == tokens.Token(tokens.TYPE_BARE_STRING, 'fawzy')
+    assert py2toml.create_primitive_token('I am a "cr\'azy" sentence.') == \
+           tokens.Token(tokens.TYPE_STRING, '"I am a \\"cr\'azy\\" sentence."')
+
+
+def test_multiline_string():
+    text = 'The\nSuper\nT"""OML"""\n\nIs coming'
+
+    primitive_token = py2toml.create_primitive_token(text)
+
+    assert primitive_token.source_substring == '"""The\nSuper\nT\"\"\"OML\"\"\"\n\nIs coming"""'
+
+
+def test_long_string():
+    text = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Suspendisse faucibus nibh id urna euismod, " \
+           "vitae blandit nisi blandit. Nam eu odio ex. Praesent iaculis sapien justo. Proin vehicula orci rhoncus " \
+           "risus mattis cursus. Sed quis commodo diam. Morbi dictum fermentum ex. Ut augue lorem, facilisis eu " \
+           "posuere ut, ullamcorper et quam. Donec porta neque eget erat lacinia, in convallis elit scelerisque. " \
+           "Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Praesent " \
+           "felis metus, venenatis eu aliquam vel, fringilla in turpis. Praesent interdum pulvinar enim, et mattis " \
+           "urna dapibus et. Sed ut egestas mauris. Etiam eleifend dui."
+
+    primitive_token = py2toml.create_primitive_token(text)
+
+    assert primitive_token.source_substring[3:-3] == r"""
+Lorem ipsum dolor sit amet, consectetur adipiscing elit. Suspendisse \
+aucibus nibh id urna euismod, vitae blandit nisi blandit. Nam eu odio ex. \
+raesent iaculis sapien justo. Proin vehicula orci rhoncus risus mattis \
+ursus. Sed quis commodo diam. Morbi dictum fermentum ex. Ut augue lorem, \
+acilisis eu posuere ut, ullamcorper et quam. Donec porta neque eget erat \
+acinia, in convallis elit scelerisque. Class aptent taciti sociosqu ad \
+itora torquent per conubia nostra, per inceptos himenaeos. Praesent felis \
+etus, venenatis eu aliquam vel, fringilla in turpis. Praesent interdum \
+ulvinar enim, et mattis urna dapibus et. Sed ut egestas mauris. Etiam \
+leifend dui.\
+"""
+
+
+def test_int():
+    assert py2toml.create_primitive_token(42) == tokens.Token(tokens.TYPE_INTEGER, '42')
+
+
+def test_float():
+    assert py2toml.create_primitive_token(4.2) == tokens.Token(tokens.TYPE_FLOAT, '4.2')
+
+
+def test_bool():
+    assert py2toml.create_primitive_token(False) == tokens.Token(tokens.TYPE_BOOLEAN, 'false')
+    assert py2toml.create_primitive_token(True) == tokens.Token(tokens.TYPE_BOOLEAN, 'true')
+
+
+def test_date():
+    ts = strict_rfc3339.rfc3339_to_timestamp('1979-05-27T00:32:00-07:00')
+    dt = datetime.datetime.fromtimestamp(ts)
+    assert py2toml.create_primitive_token(dt) == tokens.Token(tokens.TYPE_DATE, '1979-05-27T07:32:00Z')
+
+
+def test_none():
+    t = py2toml.create_primitive_token(None)
+    assert t.type == tokens.TYPE_STRING and t.source_substring == '""'
diff --git a/pipenv/vendor/prettytoml/tokens/test_toml2py.py b/pipenv/vendor/prettytoml/tokens/test_toml2py.py
new file mode 100755
index 00000000..ce166365
--- /dev/null
+++ b/pipenv/vendor/prettytoml/tokens/test_toml2py.py
@@ -0,0 +1,86 @@
+from datetime import datetime
+
+import pytz
+
+from prettytoml import tokens
+from prettytoml.tokens import toml2py
+from prettytoml.tokens.errors import BadEscapeCharacter, DeserializationError
+
+
+def test_integer():
+    t1 = tokens.Token(tokens.TYPE_INTEGER, '42')
+    t2 = tokens.Token(tokens.TYPE_INTEGER, '1_001_2')
+
+    assert toml2py.deserialize(t1) == 42
+    assert toml2py.deserialize(t2) == 10012
+
+
+def test_float():
+    tokens_and_values = (
+        ('4.2', 4.2),
+        ('12e2', 12e2),
+        ('1_000e2', 1e5),
+        ('314.1e-2', 3.141)
+    )
+    for token_string, value in tokens_and_values:
+        token = tokens.Token(tokens.TYPE_FLOAT, token_string)
+        assert toml2py.deserialize(token) == value
+
+
+def test_string():
+
+    t0 = tokens.Token(tokens.TYPE_BARE_STRING, 'fawzy')
+    assert toml2py.deserialize(t0) == 'fawzy'
+
+    t1 = tokens.Token(tokens.TYPE_STRING, '"I\'m a string. \\"You can quote me\\". Name\\tJos\\u00E9\\nLocation\\tSF."')
+    assert toml2py.deserialize(t1) == u'I\'m a string. "You can quote me". Name\tJos\xe9\nLocation\tSF.'
+
+    t2 = tokens.Token(tokens.TYPE_MULTILINE_STRING, '"""\nRoses are red\nViolets are blue"""')
+    assert toml2py.deserialize(t2) == 'Roses are red\nViolets are blue'
+
+    t3_str = '"""\nThe quick brown \\\n\n\n  fox jumps over \\\n    the lazy dog."""'
+    t3 = tokens.Token(tokens.TYPE_MULTILINE_STRING, t3_str)
+    assert toml2py.deserialize(t3) == 'The quick brown fox jumps over the lazy dog.'
+
+    t4_str = '"""\\\n       The quick brown \\\n       fox jumps over \\\n       the lazy dog.\\\n       """'
+    t4 = tokens.Token(tokens.TYPE_MULTILINE_STRING, t4_str)
+    assert toml2py.deserialize(t4) == 'The quick brown fox jumps over the lazy dog.'
+
+    t5 = tokens.Token(tokens.TYPE_LITERAL_STRING, r"'C:\Users\nodejs\templates'")
+    assert toml2py.deserialize(t5) == r'C:\Users\nodejs\templates'
+
+    t6_str = "'''\nThe first newline is\ntrimmed in raw strings.\n   All other whitespace\n   is preserved.\n'''"
+    t6 = tokens.Token(tokens.TYPE_MULTILINE_LITERAL_STRING, t6_str)
+    assert toml2py.deserialize(t6) == 'The first newline is\ntrimmed in raw strings.\n   All' \
+                                      ' other whitespace\n   is preserved.\n'
+
+
+def test_date():
+    t0 = tokens.Token(tokens.TYPE_DATE, '1979-05-27T07:32:00Z')
+    assert toml2py.deserialize(t0) == datetime(1979, 5, 27, 7, 32, tzinfo=pytz.utc)
+
+    t1 = tokens.Token(tokens.TYPE_DATE, '1979-05-27T00:32:00-07:00')
+    assert toml2py.deserialize(t1) == datetime(1979, 5, 27, 7, 32, tzinfo=pytz.utc)
+
+    t3 = tokens.Token(tokens.TYPE_DATE, '1987-07-05T17:45:00')
+    try:
+        toml2py.deserialize(t3)
+        assert False, 'Should detect malformed date'
+    except DeserializationError:
+        pass
+
+
+def test_unescaping_a_string():
+
+    bad_escapes = (
+        r"This string has a bad \a escape character.",
+        r'\x33',
+    )
+
+    for source in bad_escapes:
+        # Should complain about bad escape jobs
+        try:
+            toml2py._unescape_str(source)
+            assert False, "Should have thrown an exception for: " + source
+        except BadEscapeCharacter:
+            pass
diff --git a/pipenv/vendor/prettytoml/tokens/toml2py.py b/pipenv/vendor/prettytoml/tokens/toml2py.py
new file mode 100755
index 00000000..2bf9c1c2
--- /dev/null
+++ b/pipenv/vendor/prettytoml/tokens/toml2py.py
@@ -0,0 +1,131 @@
+import re
+import string
+import iso8601
+from prettytoml import tokens
+from prettytoml.tokens import TYPE_BOOLEAN, TYPE_INTEGER, TYPE_FLOAT, TYPE_DATE, \
+    TYPE_MULTILINE_STRING, TYPE_BARE_STRING, TYPE_MULTILINE_LITERAL_STRING, TYPE_LITERAL_STRING, \
+    TYPE_STRING
+import codecs
+import six
+from prettytoml.tokens.errors import MalformedDateError
+from .errors import BadEscapeCharacter
+import functools
+import operator
+
+
+def deserialize(token):
+    """
+    Deserializes the value of a single tokens.Token instance based on its type.
+
+    Raises DeserializationError when appropriate.
+    """
+    
+    if token.type == TYPE_BOOLEAN:
+        return _to_boolean(token)
+    elif token.type == TYPE_INTEGER:
+        return _to_int(token)
+    elif token.type == TYPE_FLOAT:
+        return _to_float(token)
+    elif token.type == TYPE_DATE:
+        return _to_date(token)
+    elif token.type in (TYPE_STRING, TYPE_MULTILINE_STRING, TYPE_BARE_STRING,
+                        TYPE_LITERAL_STRING, TYPE_MULTILINE_LITERAL_STRING):
+        return _to_string(token)
+    else:
+        raise Exception('This should never happen!')
+
+
+def _unescape_str(text):
+    """
+    Unescapes a string according the TOML spec. Raises BadEscapeCharacter when appropriate.
+    """
+
+    # Detect bad escape jobs
+    bad_escape_regexp = re.compile(r'([^\\]|^)\\[^btnfr"\\uU]')
+    if bad_escape_regexp.findall(text):
+        raise BadEscapeCharacter
+
+    # Do the unescaping
+    if six.PY2:
+        return _unicode_escaped_string(text).decode('string-escape').decode('unicode-escape')
+    else:
+        return codecs.decode(_unicode_escaped_string(text), 'unicode-escape')
+
+
+def _unicode_escaped_string(text):
+    """
+    Escapes all unicode characters in the given string
+    """
+
+    if six.PY2:
+        text = unicode(text)
+
+    def is_unicode(c):
+        return c.lower() not in string.ascii_letters + string.whitespace + string.punctuation + string.digits
+
+    def escape_unicode_char(x):
+        if six.PY2:
+            return x.encode('unicode-escape')
+        else:
+            return codecs.encode(x, 'unicode-escape')
+
+    if any(is_unicode(c) for c in text):
+        homogeneous_chars = tuple(escape_unicode_char(c) if is_unicode(c) else c.encode() for c in text)
+        homogeneous_bytes = functools.reduce(operator.add, homogeneous_chars)
+        return homogeneous_bytes.decode()
+    else:
+        return text
+
+
+def _to_string(token):
+    if token.type == tokens.TYPE_BARE_STRING:
+        return token.source_substring
+
+    elif token.type == tokens.TYPE_STRING:
+        escaped = token.source_substring[1:-1]
+        return _unescape_str(escaped)
+
+    elif token.type == tokens.TYPE_MULTILINE_STRING:
+        escaped = token.source_substring[3:-3]
+
+        # Drop the first newline if existed
+        if escaped and escaped[0] == '\n':
+            escaped = escaped[1:]
+
+        # Remove all occurrences of a slash-newline-zero-or-more-whitespace patterns
+        escaped = re.sub(r'\\\n\s*', repl='', string=escaped, flags=re.DOTALL)
+        return _unescape_str(escaped)
+
+    elif token.type == tokens.TYPE_LITERAL_STRING:
+        return token.source_substring[1:-1]
+
+    elif token.type == tokens.TYPE_MULTILINE_LITERAL_STRING:
+        text = token.source_substring[3:-3]
+        if text[0] == '\n':
+            text = text[1:]
+        return text
+
+    raise RuntimeError('Control should never reach here.')
+
+
+def _to_int(token):
+    return int(token.source_substring.replace('_', ''))
+
+
+def _to_float(token):
+    assert token.type == tokens.TYPE_FLOAT
+    string = token.source_substring.replace('_', '')
+    return float(string)
+
+
+def _to_boolean(token):
+    return token.source_substring == 'true'
+
+
+_correct_date_format = re.compile(r'\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}(Z|(\+|-)\d{2}:\d{2})')
+
+
+def _to_date(token):
+    if not _correct_date_format.match(token.source_substring):
+        raise MalformedDateError
+    return iso8601.parse_date(token.source_substring)
diff --git a/pipenv/vendor/prettytoml/util.py b/pipenv/vendor/prettytoml/util.py
new file mode 100755
index 00000000..155f00e2
--- /dev/null
+++ b/pipenv/vendor/prettytoml/util.py
@@ -0,0 +1,141 @@
+import math
+import itertools
+
+
+def is_sequence_like(x):
+    """
+    Returns True if x exposes a sequence-like interface.
+    """
+    required_attrs = (
+        '__len__',
+        '__getitem__'
+    )
+    return all(hasattr(x, attr) for attr in required_attrs)
+
+
+def is_dict_like(x):
+    """
+    Returns True if x exposes a dict-like interface.
+    """
+    required_attrs = (
+        '__len__',
+        '__getitem__',
+        'keys',
+        'values',
+    )
+    return all(hasattr(x, attr) for attr in required_attrs)
+
+
+def join_with(iterable, separator):
+    """
+    Joins elements from iterable with separator and returns the produced sequence as a list.
+
+    separator must be addable to a list.
+    """
+    inputs = list(iterable)
+    b = []
+    for i, element in enumerate(inputs):
+        if isinstance(element, (list, tuple, set)):
+            b += tuple(element)
+        else:
+            b += [element]
+        if i < len(inputs)-1:
+            b += separator
+    return b
+
+
+def chunkate_string(text, length):
+    """
+    Iterates over the given seq in chunks of at maximally the given length. Will never break a whole word.
+    """
+    iterator_index = 0
+
+    def next_newline():
+        try:
+            return next(i for (i, c) in enumerate(text) if i > iterator_index and c == '\n')
+        except StopIteration:
+            return len(text)
+
+    def next_breaker():
+        try:
+            return next(i for (i, c) in reversed(tuple(enumerate(text)))
+                        if i >= iterator_index and
+                        (i < iterator_index+length) and
+                        c in (' ', '\t'))
+        except StopIteration:
+            return len(text)
+
+    while iterator_index < len(text):
+        next_chunk = text[iterator_index:min(next_newline(), next_breaker()+1)]
+        iterator_index += len(next_chunk)
+        yield next_chunk
+
+
+def flatten_nested(nested_dicts):
+    """
+    Flattens dicts and sequences into one dict with tuples of keys representing the nested keys.
+
+    Example
+    >>> dd = { \
+        'dict1': {'name': 'Jon', 'id': 42}, \
+        'dict2': {'name': 'Sam', 'id': 41}, \
+        'seq1': [{'one': 1, 'two': 2}] \
+        }
+
+    >>> flatten_nested(dd) == { \
+        ('dict1', 'name'): 'Jon', ('dict1', 'id'): 42, \
+        ('dict2', 'name'): 'Sam', ('dict2', 'id'): 41, \
+        ('seq1', 0, 'one'): 1, ('seq1', 0, 'two'): 2, \
+        }
+    True
+    """
+    assert isinstance(nested_dicts, (dict, list, tuple)), 'Only works with a collection parameter'
+
+    def items(c):
+        if isinstance(c, dict):
+            return c.items()
+        elif isinstance(c, (list, tuple)):
+            return enumerate(c)
+        else:
+            raise RuntimeError('c must be a collection')
+
+    def flatten(dd):
+        output = {}
+        for k, v in items(dd):
+            if isinstance(v, (dict, list, tuple)):
+                for child_key, child_value in flatten(v).items():
+                    output[(k,) + child_key] = child_value
+            else:
+                output[(k,)] = v
+        return output
+
+    return flatten(nested_dicts)
+
+
+class PeekableIterator:
+
+    # Returned by peek() when the iterator is exhausted. Truthiness is False.
+    Nothing = tuple()
+
+    def __init__(self, iter):
+        self._iter = iter
+
+    def __next__(self):
+        return next(self._iter)
+
+    def next(self):
+        return self.__next__()
+
+    def __iter__(self):
+        return self
+
+    def peek(self):
+        """
+        Returns PeekableIterator.Nothing when the iterator is exhausted.
+        """
+        try:
+            v = next(self._iter)
+            self._iter = itertools.chain((v,), self._iter)
+            return v
+        except StopIteration:
+            return PeekableIterator.Nothing
diff --git a/pipenv/vendor/pytoml/__init__.py b/pipenv/vendor/pytoml/__init__.py
new file mode 100755
index 00000000..8dc73155
--- /dev/null
+++ b/pipenv/vendor/pytoml/__init__.py
@@ -0,0 +1,3 @@
+from .core import TomlError
+from .parser import load, loads
+from .writer import dump, dumps
diff --git a/pipenv/vendor/pytoml/core.py b/pipenv/vendor/pytoml/core.py
new file mode 100755
index 00000000..c182734e
--- /dev/null
+++ b/pipenv/vendor/pytoml/core.py
@@ -0,0 +1,13 @@
+class TomlError(RuntimeError):
+    def __init__(self, message, line, col, filename):
+        RuntimeError.__init__(self, message, line, col, filename)
+        self.message = message
+        self.line = line
+        self.col = col
+        self.filename = filename
+
+    def __str__(self):
+        return '{}({}, {}): {}'.format(self.filename, self.line, self.col, self.message)
+
+    def __repr__(self):
+        return 'TomlError({!r}, {!r}, {!r}, {!r})'.format(self.message, self.line, self.col, self.filename)
diff --git a/pipenv/vendor/pytoml/parser.py b/pipenv/vendor/pytoml/parser.py
new file mode 100755
index 00000000..7fc3d34d
--- /dev/null
+++ b/pipenv/vendor/pytoml/parser.py
@@ -0,0 +1,374 @@
+import string, re, sys, datetime
+from .core import TomlError
+
+if sys.version_info[0] == 2:
+    _chr = unichr
+else:
+    _chr = chr
+
+def load(fin, translate=lambda t, x, v: v):
+    return loads(fin.read(), translate=translate, filename=getattr(fin, 'name', repr(fin)))
+
+def loads(s, filename='<string>', translate=lambda t, x, v: v):
+    if isinstance(s, bytes):
+        s = s.decode('utf-8')
+
+    s = s.replace('\r\n', '\n')
+
+    root = {}
+    tables = {}
+    scope = root
+
+    src = _Source(s, filename=filename)
+    ast = _p_toml(src)
+
+    def error(msg):
+        raise TomlError(msg, pos[0], pos[1], filename)
+
+    def process_value(v):
+        kind, text, value, pos = v
+        if kind == 'str' and value.startswith('\n'):
+            value = value[1:]
+        if kind == 'array':
+            if value and any(k != value[0][0] for k, t, v, p in value[1:]):
+                error('array-type-mismatch')
+            value = [process_value(item) for item in value]
+        elif kind == 'table':
+            value = dict([(k, process_value(value[k])) for k in value])
+        return translate(kind, text, value)
+
+    for kind, value, pos in ast:
+        if kind == 'kv':
+            k, v = value
+            if k in scope:
+                error('duplicate_keys. Key "{0}" was used more than once.'.format(k))
+            scope[k] = process_value(v)
+        else:
+            is_table_array = (kind == 'table_array')
+            cur = tables
+            for name in value[:-1]:
+                if isinstance(cur.get(name), list):
+                    d, cur = cur[name][-1]
+                else:
+                    d, cur = cur.setdefault(name, (None, {}))
+
+            scope = {}
+            name = value[-1]
+            if name not in cur:
+                if is_table_array:
+                    cur[name] = [(scope, {})]
+                else:
+                    cur[name] = (scope, {})
+            elif isinstance(cur[name], list):
+                if not is_table_array:
+                    error('table_type_mismatch')
+                cur[name].append((scope, {}))
+            else:
+                if is_table_array:
+                    error('table_type_mismatch')
+                old_scope, next_table = cur[name]
+                if old_scope is not None:
+                    error('duplicate_tables')
+                cur[name] = (scope, next_table)
+
+    def merge_tables(scope, tables):
+        if scope is None:
+            scope = {}
+        for k in tables:
+            if k in scope:
+                error('key_table_conflict')
+            v = tables[k]
+            if isinstance(v, list):
+                scope[k] = [merge_tables(sc, tbl) for sc, tbl in v]
+            else:
+                scope[k] = merge_tables(v[0], v[1])
+        return scope
+
+    return merge_tables(root, tables)
+
+class _Source:
+    def __init__(self, s, filename=None):
+        self.s = s
+        self._pos = (1, 1)
+        self._last = None
+        self._filename = filename
+        self.backtrack_stack = []
+
+    def last(self):
+        return self._last
+
+    def pos(self):
+        return self._pos
+
+    def fail(self):
+        return self._expect(None)
+
+    def consume_dot(self):
+        if self.s:
+            self._last = self.s[0]
+            self.s = self[1:]
+            self._advance(self._last)
+            return self._last
+        return None
+
+    def expect_dot(self):
+        return self._expect(self.consume_dot())
+
+    def consume_eof(self):
+        if not self.s:
+            self._last = ''
+            return True
+        return False
+
+    def expect_eof(self):
+        return self._expect(self.consume_eof())
+
+    def consume(self, s):
+        if self.s.startswith(s):
+            self.s = self.s[len(s):]
+            self._last = s
+            self._advance(s)
+            return True
+        return False
+
+    def expect(self, s):
+        return self._expect(self.consume(s))
+
+    def consume_re(self, re):
+        m = re.match(self.s)
+        if m:
+            self.s = self.s[len(m.group(0)):]
+            self._last = m
+            self._advance(m.group(0))
+            return m
+        return None
+
+    def expect_re(self, re):
+        return self._expect(self.consume_re(re))
+
+    def __enter__(self):
+        self.backtrack_stack.append((self.s, self._pos))
+
+    def __exit__(self, type, value, traceback):
+        if type is None:
+            self.backtrack_stack.pop()
+        else:
+            self.s, self._pos = self.backtrack_stack.pop()
+        return type == TomlError
+
+    def commit(self):
+        self.backtrack_stack[-1] = (self.s, self._pos)
+
+    def _expect(self, r):
+        if not r:
+            raise TomlError('msg', self._pos[0], self._pos[1], self._filename)
+        return r
+
+    def _advance(self, s):
+        suffix_pos = s.rfind('\n')
+        if suffix_pos == -1:
+            self._pos = (self._pos[0], self._pos[1] + len(s))
+        else:
+            self._pos = (self._pos[0] + s.count('\n'), len(s) - suffix_pos)
+
+_ews_re = re.compile(r'(?:[ \t]|#[^\n]*\n|#[^\n]*\Z|\n)*')
+def _p_ews(s):
+    s.expect_re(_ews_re)
+
+_ws_re = re.compile(r'[ \t]*')
+def _p_ws(s):
+    s.expect_re(_ws_re)
+
+_escapes = { 'b': '\b', 'n': '\n', 'r': '\r', 't': '\t', '"': '"', '\'': '\'',
+    '\\': '\\', '/': '/', 'f': '\f' }
+
+_basicstr_re = re.compile(r'[^"\\\000-\037]*')
+_short_uni_re = re.compile(r'u([0-9a-fA-F]{4})')
+_long_uni_re = re.compile(r'U([0-9a-fA-F]{8})')
+_escapes_re = re.compile('[bnrt"\'\\\\/f]')
+_newline_esc_re = re.compile('\n[ \t\n]*')
+def _p_basicstr_content(s, content=_basicstr_re):
+    res = []
+    while True:
+        res.append(s.expect_re(content).group(0))
+        if not s.consume('\\'):
+            break
+        if s.consume_re(_newline_esc_re):
+            pass
+        elif s.consume_re(_short_uni_re) or s.consume_re(_long_uni_re):
+            res.append(_chr(int(s.last().group(1), 16)))
+        else:
+            s.expect_re(_escapes_re)
+            res.append(_escapes[s.last().group(0)])
+    return ''.join(res)
+
+_key_re = re.compile(r'[0-9a-zA-Z-_]+')
+def _p_key(s):
+    with s:
+        s.expect('"')
+        r = _p_basicstr_content(s, _basicstr_re)
+        s.expect('"')
+        return r
+    if s.consume('\''):
+        if s.consume('\'\''):
+            r = s.expect_re(_litstr_ml_re).group(0)
+            s.expect('\'\'\'')
+        else:
+            r = s.expect_re(_litstr_re).group(0)
+            s.expect('\'')
+        return r
+    return s.expect_re(_key_re).group(0)
+
+_float_re = re.compile(r'[+-]?(?:0|[1-9](?:_?\d)*)(?:\.\d(?:_?\d)*)?(?:[eE][+-]?(?:\d(?:_?\d)*))?')
+_datetime_re = re.compile(r'(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2})(\.\d+)?(?:Z|([+-]\d{2}):(\d{2}))')
+
+_basicstr_ml_re = re.compile(r'(?:(?:|"|"")[^"\\\000-\011\013-\037])*')
+_litstr_re = re.compile(r"[^'\000-\037]*")
+_litstr_ml_re = re.compile(r"(?:(?:|'|'')(?:[^'\000-\011\013-\037]))*")
+def _p_value(s):
+    pos = s.pos()
+
+    if s.consume('true'):
+        return 'bool', s.last(), True, pos
+    if s.consume('false'):
+        return 'bool', s.last(), False, pos
+
+    if s.consume('"'):
+        if s.consume('""'):
+            r = _p_basicstr_content(s, _basicstr_ml_re)
+            s.expect('"""')
+        else:
+            r = _p_basicstr_content(s, _basicstr_re)
+            s.expect('"')
+        return 'str', r, r, pos
+
+    if s.consume('\''):
+        if s.consume('\'\''):
+            r = s.expect_re(_litstr_ml_re).group(0)
+            s.expect('\'\'\'')
+        else:
+            r = s.expect_re(_litstr_re).group(0)
+            s.expect('\'')
+        return 'str', r, r, pos
+
+    if s.consume_re(_datetime_re):
+        m = s.last()
+        s0 = m.group(0)
+        r = map(int, m.groups()[:6])
+        if m.group(7):
+            micro = float(m.group(7))
+        else:
+            micro = 0
+
+        if m.group(8):
+            g = int(m.group(8), 10) * 60 + int(m.group(9), 10)
+            tz = _TimeZone(datetime.timedelta(0, g * 60))
+        else:
+            tz = _TimeZone(datetime.timedelta(0, 0))
+
+        y, m, d, H, M, S = r
+        dt = datetime.datetime(y, m, d, H, M, S, int(micro * 1000000), tz)
+        return 'datetime', s0, dt, pos
+
+    if s.consume_re(_float_re):
+        m = s.last().group(0)
+        r = m.replace('_','')
+        if '.' in m or 'e' in m or 'E' in m:
+            return 'float', m, float(r), pos
+        else:
+            return 'int', m, int(r, 10), pos
+
+    if s.consume('['):
+        items = []
+        with s:
+            while True:
+                _p_ews(s)
+                items.append(_p_value(s))
+                s.commit()
+                _p_ews(s)
+                s.expect(',')
+                s.commit()
+        _p_ews(s)
+        s.expect(']')
+        return 'array', None, items, pos
+
+    if s.consume('{'):
+        _p_ws(s)
+        items = {}
+        if not s.consume('}'):
+            k = _p_key(s)
+            _p_ws(s)
+            s.expect('=')
+            _p_ws(s)
+            items[k] = _p_value(s)
+            _p_ws(s)
+            while s.consume(','):
+                _p_ws(s)
+                k = _p_key(s)
+                _p_ws(s)
+                s.expect('=')
+                _p_ws(s)
+                items[k] = _p_value(s)
+                _p_ws(s)
+            s.expect('}')
+        return 'table', None, items, pos
+
+    s.fail()
+
+def _p_stmt(s):
+    pos = s.pos()
+    if s.consume(   '['):
+        is_array = s.consume('[')
+        _p_ws(s)
+        keys = [_p_key(s)]
+        _p_ws(s)
+        while s.consume('.'):
+            _p_ws(s)
+            keys.append(_p_key(s))
+            _p_ws(s)
+        s.expect(']')
+        if is_array:
+            s.expect(']')
+        return 'table_array' if is_array else 'table', keys, pos
+
+    key = _p_key(s)
+    _p_ws(s)
+    s.expect('=')
+    _p_ws(s)
+    value = _p_value(s)
+    return 'kv', (key, value), pos
+
+_stmtsep_re = re.compile(r'(?:[ \t]*(?:#[^\n]*)?\n)+[ \t]*')
+def _p_toml(s):
+    stmts = []
+    _p_ews(s)
+    with s:
+        stmts.append(_p_stmt(s))
+        while True:
+            s.commit()
+            s.expect_re(_stmtsep_re)
+            stmts.append(_p_stmt(s))
+    _p_ews(s)
+    s.expect_eof()
+    return stmts
+
+class _TimeZone(datetime.tzinfo):
+    def __init__(self, offset):
+        self._offset = offset
+
+    def utcoffset(self, dt):
+        return self._offset
+
+    def dst(self, dt):
+        return None
+
+    def tzname(self, dt):
+        m = self._offset.total_seconds() // 60
+        if m < 0:
+            res = '-'
+            m = -m
+        else:
+            res = '+'
+        h = m // 60
+        m = m - h * 60
+        return '{}{:.02}{:.02}'.format(res, h, m)
diff --git a/pipenv/vendor/pytoml/writer.py b/pipenv/vendor/pytoml/writer.py
new file mode 100755
index 00000000..6eaf5d76
--- /dev/null
+++ b/pipenv/vendor/pytoml/writer.py
@@ -0,0 +1,127 @@
+from __future__ import unicode_literals
+import io, datetime, math, sys
+
+if sys.version_info[0] == 3:
+    long = int
+    unicode = str
+
+
+def dumps(obj, sort_keys=False):
+    fout = io.StringIO()
+    dump(obj, fout, sort_keys=sort_keys)
+    return fout.getvalue()
+
+
+_escapes = {'\n': 'n', '\r': 'r', '\\': '\\', '\t': 't', '\b': 'b', '\f': 'f', '"': '"'}
+
+
+def _escape_string(s):
+    res = []
+    start = 0
+
+    def flush():
+        if start != i:
+            res.append(s[start:i])
+        return i + 1
+
+    i = 0
+    while i < len(s):
+        c = s[i]
+        if c in '"\\\n\r\t\b\f':
+            start = flush()
+            res.append('\\' + _escapes[c])
+        elif ord(c) < 0x20:
+            start = flush()
+            res.append('\\u%04x' % ord(c))
+        i += 1
+
+    flush()
+    return '"' + ''.join(res) + '"'
+
+
+def _escape_id(s):
+    if any(not c.isalnum() and c not in '-_' for c in s):
+        return _escape_string(s)
+    return s
+
+
+def _format_list(v):
+    return '[{0}]'.format(', '.join(_format_value(obj) for obj in v))
+
+# Formula from:
+#   https://docs.python.org/2/library/datetime.html#datetime.timedelta.total_seconds
+# Once support for py26 is dropped, this can be replaced by td.total_seconds()
+def _total_seconds(td):
+    return ((td.microseconds
+             + (td.seconds + td.days * 24 * 3600) * 10**6) / 10.0**6)
+
+def _format_value(v):
+    if isinstance(v, bool):
+        return 'true' if v else 'false'
+    if isinstance(v, int) or isinstance(v, long):
+        return unicode(v)
+    if isinstance(v, float):
+        if math.isnan(v) or math.isinf(v):
+            raise ValueError("{0} is not a valid TOML value".format(v))
+        else:
+            return repr(v)
+    elif isinstance(v, unicode) or isinstance(v, bytes):
+        return _escape_string(v)
+    elif isinstance(v, datetime.datetime):
+        offs = v.utcoffset()
+        offs = _total_seconds(offs) // 60 if offs is not None else 0
+
+        if offs == 0:
+            suffix = 'Z'
+        else:
+            if offs > 0:
+                suffix = '+'
+            else:
+                suffix = '-'
+                offs = -offs
+            suffix = '{0}{1:.02}{2:.02}'.format(suffix, offs // 60, offs % 60)
+
+        if v.microsecond:
+            return v.strftime('%Y-%m-%dT%H:%M:%S.%f') + suffix
+        else:
+            return v.strftime('%Y-%m-%dT%H:%M:%S') + suffix
+    elif isinstance(v, list):
+        return _format_list(v)
+    else:
+        raise RuntimeError(v)
+
+
+def dump(obj, fout, sort_keys=False):
+    tables = [((), obj, False)]
+
+    while tables:
+        name, table, is_array = tables.pop()
+        if name:
+            section_name = '.'.join(_escape_id(c) for c in name)
+            if is_array:
+                fout.write('[[{0}]]\n'.format(section_name))
+            else:
+                fout.write('[{0}]\n'.format(section_name))
+
+        table_keys = sorted(table.keys()) if sort_keys else table.keys()
+        new_tables = []
+        has_kv = False
+        for k in table_keys:
+            v = table[k]
+            if isinstance(v, dict):
+                new_tables.append((name + (k,), v, False))
+            elif isinstance(v, list) and v and all(isinstance(o, dict) for o in v):
+                new_tables.extend((name + (k,), d, True) for d in v)
+            elif v is None:
+                # based on mojombo's comment: https://github.com/toml-lang/toml/issues/146#issuecomment-25019344
+                fout.write(
+                    '#{} = null  # To use: uncomment and replace null with value\n'.format(_escape_id(k)))
+                has_kv = True
+            else:
+                fout.write('{0} = {1}\n'.format(_escape_id(k), _format_value(v)))
+                has_kv = True
+
+        tables.extend(reversed(new_tables))
+
+        if (name or has_kv) and tables:
+            fout.write('\n')
diff --git a/pipenv/vendor/strict_rfc3339.py b/pipenv/vendor/strict_rfc3339.py
new file mode 100644
index 00000000..4558c01b
--- /dev/null
+++ b/pipenv/vendor/strict_rfc3339.py
@@ -0,0 +1,202 @@
+# Copyright 2012 (C) Daniel Richman, Adam Greig
+#
+# This file is part of strict_rfc3339.
+#
+# strict_rfc3339 is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# strict_rfc3339 is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with strict_rfc3339.  If not, see <http://www.gnu.org/licenses/>.
+
+"""
+Super simple lightweight RFC3339 functions
+"""
+
+import re
+import time
+import calendar
+
+__all__ = ["validate_rfc3339",
+           "InvalidRFC3339Error",
+           "rfc3339_to_timestamp",
+           "timestamp_to_rfc3339_utcoffset",
+           "timestamp_to_rfc3339_localoffset",
+           "now_to_rfc3339_utcoffset",
+           "now_to_rfc3339_localoffset"]
+
+rfc3339_regex = re.compile(
+    r"^(\d\d\d\d)\-(\d\d)\-(\d\d)T"
+    r"(\d\d):(\d\d):(\d\d)(\.\d+)?(Z|([+\-])(\d\d):(\d\d))$")
+
+
+def validate_rfc3339(datestring):
+    """Check an RFC3339 string is valid via a regex and some range checks"""
+
+    m = rfc3339_regex.match(datestring)
+    if m is None:
+        return False
+
+    groups = m.groups()
+
+    year, month, day, hour, minute, second = [int(i) for i in groups[:6]]
+
+    if not 1 <= year <= 9999:
+        # Have to reject this, unfortunately (despite it being OK by rfc3339):
+        # calendar.timegm/calendar.monthrange can't cope (since datetime can't)
+        return False
+
+    if not 1 <= month <= 12:
+        return False
+
+    (_, max_day) = calendar.monthrange(year, month)
+    if not 1 <= day <= max_day:
+        return False
+
+    if not (0 <= hour <= 23 and 0 <= minute <= 59 and 0 <= second <= 59):
+        # forbid leap seconds :-(. See README
+        return False
+
+    if groups[7] != "Z":
+        (offset_sign, offset_hours, offset_mins) = groups[8:]
+        if not (0 <= int(offset_hours) <= 23 and 0 <= int(offset_mins) <= 59):
+            return False
+
+    # all OK
+    return True
+
+
+class InvalidRFC3339Error(ValueError):
+    """Subclass of ValueError thrown by rfc3339_to_timestamp"""
+    pass
+
+
+def rfc3339_to_timestamp(datestring):
+    """Convert an RFC3339 date-time string to a UTC UNIX timestamp"""
+
+    if not validate_rfc3339(datestring):
+        raise InvalidRFC3339Error
+
+    groups = rfc3339_regex.match(datestring).groups()
+
+    time_tuple = [int(p) for p in groups[:6]]
+    timestamp = calendar.timegm(time_tuple)
+
+    seconds_part = groups[6]
+    if seconds_part is not None:
+        timestamp += float("0" + seconds_part)
+
+    if groups[7] != "Z":
+        (offset_sign, offset_hours, offset_mins) = groups[8:]
+        offset_seconds = int(offset_hours) * 3600 + int(offset_mins) * 60
+        if offset_sign == '-':
+            offset_seconds = -offset_seconds
+        timestamp -= offset_seconds
+
+    return timestamp
+
+
+def _seconds_and_microseconds(timestamp):
+    """
+    Split a floating point timestamp into an integer number of seconds since
+    the epoch, and an integer number of microseconds (having rounded to the
+    nearest microsecond).
+
+    If `_seconds_and_microseconds(x) = (y, z)` then the following holds (up to
+    the error introduced by floating point operations):
+
+    * `x = y + z / 1_000_000.`
+    * `0 <= z < 1_000_000.`
+    """
+
+    if isinstance(timestamp, int):
+        return (timestamp, 0)
+    else:
+        timestamp_us = int(round(timestamp * 1e6))
+        return divmod(timestamp_us, 1000000)
+
+def _make_datestring_start(time_tuple, microseconds):
+    ds_format = "{0:04d}-{1:02d}-{2:02d}T{3:02d}:{4:02d}:{5:02d}"
+    datestring = ds_format.format(*time_tuple)
+
+    seconds_part_str = "{0:06d}".format(microseconds)
+    # There used to be a bug here where it could be 1000000
+    assert len(seconds_part_str) == 6 and seconds_part_str[0] != '-'
+    seconds_part_str = seconds_part_str.rstrip("0")
+    if seconds_part_str != "":
+        datestring += "." + seconds_part_str
+
+    return datestring
+
+
+def timestamp_to_rfc3339_utcoffset(timestamp):
+    """Convert a UTC UNIX timestamp to RFC3339, with the offset as 'Z'"""
+
+    seconds, microseconds = _seconds_and_microseconds(timestamp)
+
+    time_tuple = time.gmtime(seconds)
+    datestring = _make_datestring_start(time_tuple, microseconds)
+    datestring += "Z"
+
+    assert abs(rfc3339_to_timestamp(datestring) - timestamp) < 0.000001
+    return datestring
+
+
+def timestamp_to_rfc3339_localoffset(timestamp):
+    """
+    Convert a UTC UNIX timestamp to RFC3339, using the local offset.
+
+    localtime() provides the time parts. The difference between gmtime and
+    localtime tells us the offset.
+    """
+
+    seconds, microseconds = _seconds_and_microseconds(timestamp)
+
+    time_tuple = time.localtime(seconds)
+    datestring = _make_datestring_start(time_tuple, microseconds)
+
+    gm_time_tuple = time.gmtime(seconds)
+    offset = calendar.timegm(time_tuple) - calendar.timegm(gm_time_tuple)
+
+    if abs(offset) % 60 != 0:
+        raise ValueError("Your local offset is not a whole minute")
+
+    offset_minutes = abs(offset) // 60
+    offset_hours = offset_minutes // 60
+    offset_minutes %= 60
+
+    offset_string = "{0:02d}:{1:02d}".format(offset_hours, offset_minutes)
+
+    if offset < 0:
+        datestring += "-"
+    else:
+        datestring += "+"
+
+    datestring += offset_string
+    assert abs(rfc3339_to_timestamp(datestring) - timestamp) < 0.000001
+
+    return datestring
+
+
+def now_to_rfc3339_utcoffset(integer=True):
+    """Convert the current time to RFC3339, with the offset as 'Z'"""
+
+    timestamp = time.time()
+    if integer:
+        timestamp = int(timestamp)
+    return timestamp_to_rfc3339_utcoffset(timestamp)
+
+
+def now_to_rfc3339_localoffset(integer=True):
+    """Convert the current time to RFC3339, using the local offset."""
+
+    timestamp = time.time()
+    if integer:
+        timestamp = int(timestamp)
+    return timestamp_to_rfc3339_localoffset(timestamp)
diff --git a/pipenv/vendor/timestamp.py b/pipenv/vendor/timestamp.py
new file mode 100644
index 00000000..effb3326
--- /dev/null
+++ b/pipenv/vendor/timestamp.py
@@ -0,0 +1,9 @@
+import sys
+
+def timestamp(d=None):
+	import datetime
+	import time
+	return int(time.mktime(d.timetuple()) * 1000) if d else int(time.time() * 1000)
+
+sys.modules[__name__] = timestamp
+