Merge pull request #3991 from chrisgavin/unused-imports

Remove some unused imports.

requests/adapters.py

@@ -19,7 +19,7 @@ from .packages.urllib3.util.retry import Retry
 from .compat import urlparse, basestring
 from .utils import (DEFAULT_CA_BUNDLE_PATH, get_encoding_from_headers,
                     prepend_scheme_if_needed, get_auth_from_url, urldefragauth,
-                    select_proxy, to_native_string)
+                    select_proxy)
 from .structures import CaseInsensitiveDict
 from .packages.urllib3.exceptions import ClosedPoolError
 from .packages.urllib3.exceptions import ConnectTimeoutError

requests/auth.py

@@ -20,7 +20,6 @@ from .compat import urlparse, str, basestring
 from .cookies import extract_cookies_to_jar
 from ._internal_utils import to_native_string
 from .utils import parse_dict_header
-from .status_codes import codes
 
 CONTENT_TYPE_FORM_URLENCODED = 'application/x-www-form-urlencoded'
 CONTENT_TYPE_MULTI_PART = 'multipart/form-data'

requests/models.py

@@ -16,7 +16,7 @@ import sys
 # such as in Embedded Python. See https://github.com/kennethreitz/requests/issues/3578.
 import encodings.idna
 
-from io import BytesIO, UnsupportedOperation
+from io import UnsupportedOperation
 from .hooks import default_hooks
 from .structures import CaseInsensitiveDict
 
@@ -36,7 +36,7 @@ from .utils import (
     stream_decode_response_unicode, to_key_val_list, parse_header_links,
     iter_slices, guess_json_utf, super_len, check_header_validity)
 from .compat import (
-    cookielib, urlunparse, urlsplit, urlencode, str, bytes, StringIO,
+    cookielib, urlunparse, urlsplit, urlencode, str, bytes,
     is_py2, chardet, builtin_str, basestring)
 from .compat import json as complexjson
 from .status_codes import codes

requests/utils.py

@@ -27,8 +27,8 @@ from .compat import parse_http_list as _parse_list_header
 from .compat import (
     quote, urlparse, bytes, str, OrderedDict, unquote, getproxies,
     proxy_bypass, urlunparse, basestring, integer_types)
-from .cookies import RequestsCookieJar, cookiejar_from_dict
-from .structures import CaseInsensitiveDict, TimedCache, TimedCacheManaged
+from .cookies import cookiejar_from_dict
+from .structures import CaseInsensitiveDict, TimedCacheManaged
 from .exceptions import (
     InvalidURL, InvalidHeader, FileModeWarning, UnrewindableBodyError)