diff --git a/.flake8 b/.flake8
new file mode 100644
index 00000000..e17ae4f4
--- /dev/null
+++ b/.flake8
@@ -0,0 +1,2 @@
+[flake8]
+ignore = E501,E266,W503,F401,F403
diff --git a/.travis.yml b/.travis.yml
index 2201fb88..093c5117 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,8 +8,9 @@ matrix:
     - python: "3.7"
       dist: xenial  # required for Python >= 3.7 (travis-ci/travis-ci#9069)
 install:
-  - pip install codecov
+  - pip install codecov flake8
 script:
+  - flake8
   - coverage run --source github,tests setup.py test
 after_success:
   - codecov
diff --git a/doc/conf.py b/doc/conf.py
index e26c68b7..3bbc4048 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -37,7 +37,7 @@ import datetime
 # add these directories to sys.path here. If the directory is relative to the
 # documentation root, use os.path.abspath to make it absolute, like shown here.
 sys.path.insert(0, os.path.abspath('..'))
-from setup import version as setupVersion
+from setup import version as setupVersion  # noqa: E402
 
 # -- General configuration -----------------------------------------------------
 
diff --git a/github/Issue.py b/github/Issue.py
index cc8a482a..9fe6aab6 100644
--- a/github/Issue.py
+++ b/github/Issue.py
@@ -43,7 +43,7 @@
 ################################################################################
 
 from __future__ import absolute_import
-import six.moves.urllib.request, six.moves.urllib.parse, six.moves.urllib.error
+import six.moves.urllib.parse
 import datetime
 import github.GithubObject
 import github.PaginatedList
diff --git a/github/Label.py b/github/Label.py
index edffca7d..b819d4e8 100644
--- a/github/Label.py
+++ b/github/Label.py
@@ -32,7 +32,7 @@
 ################################################################################
 
 from __future__ import absolute_import
-import six.moves.urllib.request, six.moves.urllib.parse, six.moves.urllib.error
+import six.moves.urllib.parse
 
 import github.GithubObject
 
diff --git a/github/Organization.py b/github/Organization.py
index e9daa8af..dd5777cb 100644
--- a/github/Organization.py
+++ b/github/Organization.py
@@ -666,10 +666,10 @@ class Organization(github.GithubObject.CompletableGithubObject):
         :param role: string
         :rtype: :class:`github.PaginatedList.PaginatedList` of :class:`github.NamedUser.NamedUser`
         """
-        assert (filter_ is github.GithubObject.NotSet or
-                isinstance(filter_, (str, six.text_type))), filter_
-        assert (role is github.GithubObject.NotSet or
-                isinstance(role, (str, six.text_type))), role
+        assert (filter_ is github.GithubObject.NotSet
+                or isinstance(filter_, (str, six.text_type))), filter_
+        assert (role is github.GithubObject.NotSet
+                or isinstance(role, (str, six.text_type))), role
 
         url_parameters = {}
         if filter_ is not github.GithubObject.NotSet:
@@ -720,8 +720,8 @@ class Organization(github.GithubObject.CompletableGithubObject):
         :param filter_: string
         :rtype: :class:`github.PaginatedList.PaginatedList` of :class:`github.NamedUser.NamedUser`
         """
-        assert (filter_ is github.GithubObject.NotSet or
-                isinstance(filter_, (str, six.text_type))), filter_
+        assert (filter_ is github.GithubObject.NotSet
+                or isinstance(filter_, (str, six.text_type))), filter_
 
         url_parameters = {}
         if filter_ is not github.GithubObject.NotSet:
diff --git a/github/PullRequest.py b/github/PullRequest.py
index 590fc07f..2dd4a9f0 100644
--- a/github/PullRequest.py
+++ b/github/PullRequest.py
@@ -44,7 +44,7 @@
 
 from __future__ import absolute_import
 import datetime
-import six.moves.urllib.request, six.moves.urllib.parse, six.moves.urllib.error
+import six.moves.urllib.parse
 import github.GithubObject
 import github.PaginatedList
 
diff --git a/github/Repository.py b/github/Repository.py
index e2e1291f..5b2aa1c9 100644
--- a/github/Repository.py
+++ b/github/Repository.py
@@ -87,7 +87,7 @@
 
 from __future__ import absolute_import
 import sys
-import six.moves.urllib.request, six.moves.urllib.parse, six.moves.urllib.error
+import six.moves.urllib.parse
 import datetime
 from base64 import b64encode
 
diff --git a/github/Requester.py b/github/Requester.py
index 63daaac2..46f68e10 100644
--- a/github/Requester.py
+++ b/github/Requester.py
@@ -62,7 +62,6 @@ import re
 import requests
 import sys
 import time
-import six.moves.urllib.request, six.moves.urllib.parse, six.moves.urllib.error
 import six.moves.urllib.parse
 from io import IOBase
 
@@ -310,8 +309,8 @@ class Requester:
         elif status == 403 and output.get("message").startswith("Missing or invalid User Agent string"):
             cls = GithubException.BadUserAgentException
         elif status == 403 and (
-            output.get("message").lower().startswith("api rate limit exceeded") or
-            output.get("message").lower().endswith("please wait a few minutes before you try again.")
+            output.get("message").lower().startswith("api rate limit exceeded")
+            or output.get("message").lower().endswith("please wait a few minutes before you try again.")
         ):
             cls = GithubException.RateLimitExceededException
         elif status == 404 and output.get("message") == "Not Found":
diff --git a/tests/AllTests.py b/tests/AllTests.py
index 84b172e2..66b819f9 100644
--- a/tests/AllTests.py
+++ b/tests/AllTests.py
@@ -127,4 +127,4 @@ from .Issue494 import *
 from .Issue572 import *
 from .Issue937 import *
 from .Issue945 import *
-from .Issue823 import *
\ No newline at end of file
+from .Issue823 import *