diff --git a/Makefile b/Makefile
index 5eadf3b5..f90248f7 100644
--- a/Makefile
+++ b/Makefile
@@ -11,7 +11,7 @@ test-readme:
 	python setup.py check -r -s
 
 flake8:
-	flake8 --ignore=E501 requests
+	flake8 --ignore=E501,F401,E128,E402,E731,F821 requests
 
 coverage:
 	py.test --cov-config .coveragerc --verbose --cov-report term --cov-report xml --cov=requests tests
diff --git a/requests/__init__.py b/requests/__init__.py
index 690320b1..d4461ec9 100644
--- a/requests/__init__.py
+++ b/requests/__init__.py
@@ -40,10 +40,6 @@ is at <http://python-requests.org>.
 :license: Apache 2.0, see LICENSE for more details.
 """
 
-from .__version__ import __title__, __description__, __url__, __version__
-from .__version__ import __build__, __author__, __author_email__, __license__
-from .__version__ import __copyright__, __cake__
-
 # Check urllib3 for compatibility.
 import urllib3
 urllib3_version = urllib3.__version__.split('.')
@@ -86,6 +82,10 @@ import warnings
 from urllib3.exceptions import DependencyWarning
 warnings.simplefilter('ignore', DependencyWarning)
 
+from .__version__ import __title__, __description__, __url__, __version__
+from .__version__ import __build__, __author__, __author_email__, __license__
+from .__version__ import __copyright__, __cake__
+
 from . import utils
 from . import packages
 from .models import Request, Response, PreparedRequest
diff --git a/requests/__version__.py b/requests/__version__.py
index dddd0349..b21ba352 100644
--- a/requests/__version__.py
+++ b/requests/__version__.py
@@ -12,5 +12,3 @@ __author_email__ = 'me@kennethreitz.org'
 __license__ = 'Apache 2.0'
 __copyright__ = 'Copyright 2017 Kenneth Reitz'
 __cake__ = u'\u2728 \U0001f370 \u2728'
-
-
diff --git a/requests/api.py b/requests/api.py
index 0b24e0ff..b2ce1a96 100644
--- a/requests/api.py
+++ b/requests/api.py
@@ -137,7 +137,7 @@ def patch(url, data=None, **kwargs):
     :rtype: requests.Response
     """
 
-    return request('patch', url,  data=data, **kwargs)
+    return request('patch', url, data=data, **kwargs)
 
 
 def delete(url, **kwargs):
diff --git a/requests/auth.py b/requests/auth.py
index a44b4d15..1a182dff 100644
--- a/requests/auth.py
+++ b/requests/auth.py
@@ -192,7 +192,7 @@ class HTTPDigestAuth(AuthBase):
         elif qop == 'auth' or 'auth' in qop.split(','):
             noncebit = "%s:%s:%s:%s:%s" % (
                 nonce, ncvalue, cnonce, 'auth', HA2
-                )
+            )
             respdig = KD(HA1, noncebit)
         else:
             # XXX handle auth-int.
diff --git a/requests/cookies.py b/requests/cookies.py
index 6484af6b..ab3c88b9 100644
--- a/requests/cookies.py
+++ b/requests/cookies.py
@@ -306,8 +306,10 @@ class RequestsCookieJar(cookielib.CookieJar, collections.MutableMapping):
         """
         dictionary = {}
         for cookie in iter(self):
-            if (domain is None or cookie.domain == domain) and (path is None
-                                                or cookie.path == path):
+            if (
+                (domain is None or cookie.domain == domain) and
+                (path is None or cookie.path == path)
+            ):
                 dictionary[cookie.name] = cookie.value
         return dictionary
 
diff --git a/requests/exceptions.py b/requests/exceptions.py
index 9684d9e5..da5af10b 100644
--- a/requests/exceptions.py
+++ b/requests/exceptions.py
@@ -100,6 +100,7 @@ class StreamConsumedError(RequestException, TypeError):
 class RetryError(RequestException):
     """Custom retries logic failed"""
 
+
 class UnrewindableBodyError(RequestException):
     """Requests encountered an error when trying to rewind a body"""
 
diff --git a/requests/help.py b/requests/help.py
index bbe44c86..ac0691e3 100644
--- a/requests/help.py
+++ b/requests/help.py
@@ -44,7 +44,7 @@ def _implementation():
         if sys.pypy_version_info.releaselevel != 'final':
             implementation_version = ''.join([
                 implementation_version, sys.pypy_version_info.releaselevel
-                ])
+            ])
     elif implementation == 'Jython':
         implementation_version = platform.python_version()  # Complete Guess
     elif implementation == 'IronPython':
@@ -101,10 +101,11 @@ def info():
         },
     }
 
+
 def main():
     """Pretty-print the bug information as JSON."""
     print(json.dumps(info(), sort_keys=True, indent=2))
 
+
 if __name__ == '__main__':
     main()
-
diff --git a/requests/models.py b/requests/models.py
index c22cc1c9..1375a3af 100644
--- a/requests/models.py
+++ b/requests/models.py
@@ -215,8 +215,9 @@ class Request(RequestHooksMixin):
       <PreparedRequest [GET]>
     """
 
-    def __init__(self, method=None, url=None, headers=None, files=None,
-        data=None, params=None, auth=None, cookies=None, hooks=None, json=None):
+    def __init__(self,
+            method=None, url=None, headers=None, files=None, data=None,
+            params=None, auth=None, cookies=None, hooks=None, json=None):
 
         # Default empty dicts for dict params.
         data = [] if data is None else data
@@ -295,8 +296,9 @@ class PreparedRequest(RequestEncodingMixin, RequestHooksMixin):
         #: integer denoting starting position of a readable file-like body.
         self._body_position = None
 
-    def prepare(self, method=None, url=None, headers=None, files=None,
-        data=None, params=None, auth=None, cookies=None, hooks=None, json=None):
+    def prepare(self,
+            method=None, url=None, headers=None, files=None, data=None,
+            params=None, auth=None, cookies=None, hooks=None, json=None):
         """Prepares the entire request with the given parameters."""
 
         self.prepare_method(method)
diff --git a/requests/sessions.py b/requests/sessions.py
index a0f290b7..db913089 100755
--- a/requests/sessions.py
+++ b/requests/sessions.py
@@ -114,7 +114,7 @@ class SessionRedirectMixin(object):
                           verify=True, cert=None, proxies=None, yield_requests=False, **adapter_kwargs):
         """Receives a Response. Returns a generator of Responses or Requests."""
 
-        hist = [] # keep track of history
+        hist = []  # keep track of history
 
         url = self.get_redirect_target(resp)
         while url:
@@ -433,20 +433,9 @@ class Session(SessionRedirectMixin):
         return p
 
     def request(self, method, url,
-        params=None,
-        data=None,
-        headers=None,
-        cookies=None,
-        files=None,
-        auth=None,
-        timeout=None,
-        allow_redirects=True,
-        proxies=None,
-        hooks=None,
-        stream=None,
-        verify=None,
-        cert=None,
-        json=None):
+            params=None, data=None, headers=None, cookies=None, files=None,
+            auth=None, timeout=None, allow_redirects=True, proxies=None,
+            hooks=None, stream=None, verify=None, cert=None, json=None):
         """Constructs a :class:`Request <Request>`, prepares it and sends it.
         Returns :class:`Response <Response>` object.
 
@@ -485,16 +474,16 @@ class Session(SessionRedirectMixin):
         """
         # Create the Request.
         req = Request(
-            method = method.upper(),
-            url = url,
-            headers = headers,
-            files = files,
-            data = data or {},
-            json = json,
-            params = params or {},
-            auth = auth,
-            cookies = cookies,
-            hooks = hooks,
+            method=method.upper(),
+            url=url,
+            headers=headers,
+            files=files,
+            data=data or {},
+            json=json,
+            params=params or {},
+            auth=auth,
+            cookies=cookies,
+            hooks=hooks,
         )
         prep = self.prepare_request(req)
 
@@ -579,7 +568,7 @@ class Session(SessionRedirectMixin):
         :rtype: requests.Response
         """
 
-        return self.request('PATCH', url,  data=data, **kwargs)
+        return self.request('PATCH', url, data=data, **kwargs)
 
     def delete(self, url, **kwargs):
         r"""Sends a DELETE request. Returns :class:`Response` object.
diff --git a/requests/utils.py b/requests/utils.py
index 056f6fb3..25af9923 100644
--- a/requests/utils.py
+++ b/requests/utils.py
@@ -494,8 +494,7 @@ def get_unicode_from_response(r):
 
 # The unreserved URI characters (RFC 3986)
 UNRESERVED_SET = frozenset(
-    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
-    + "0123456789-._~")
+    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz" + "0123456789-._~")
 
 
 def unquote_unreserved(uri):
@@ -851,6 +850,7 @@ def get_auth_from_url(url):
 _CLEAN_HEADER_REGEX_BYTE = re.compile(b'^\\S[^\\r\\n]*$|^$')
 _CLEAN_HEADER_REGEX_STR = re.compile(r'^\S[^\r\n]*$|^$')
 
+
 def check_header_validity(header):
     """Verifies that header value is a string which doesn't contain
     leading whitespace or return characters. This prevents unintended
@@ -888,6 +888,7 @@ def urldefragauth(url):
 
     return urlunparse((scheme, netloc, path, params, query, ''))
 
+
 def rewind_body(prepared_request):
     """Move file pointer back to its recorded starting position
     so it can be read again on redirect.