Fix all type issues flagged by mypy (#1484)

github/__init__.py

@@ -36,6 +36,22 @@ like :class:`github.NamedUser.NamedUser` or :class:`github.Repository.Repository
 
 All classes inherit from :class:`github.GithubObject.GithubObject`.
 """
+__all__ = [
+    "BadAttributeException",
+    "BadCredentialsException",
+    "BadUserAgentException",
+    "enable_console_debug_logging",
+    "Github",
+    "GithubException",
+    "GithubIntegration",
+    "IncompletableObject",
+    "InputFileContent",
+    "InputGitAuthor",
+    "InputGitTreeElement",
+    "RateLimitExceededException",
+    "TwoFactorException",
+    "UnknownObjectException",
+]
 
 import logging
 
@@ -64,21 +80,3 @@ def enable_console_debug_logging():  # pragma no cover (Function useful only out
     logger = logging.getLogger("github")
     logger.setLevel(logging.DEBUG)
     logger.addHandler(logging.StreamHandler())
-
-
-__all__ = [
-    BadAttributeException,
-    BadCredentialsException,
-    BadUserAgentException,
-    enable_console_debug_logging,
-    Github,
-    GithubException,
-    GithubIntegration,
-    IncompletableObject,
-    InputFileContent,
-    InputGitAuthor,
-    InputGitTreeElement,
-    RateLimitExceededException,
-    TwoFactorException,
-    UnknownObjectException,
-]

tox.ini

@@ -18,7 +18,7 @@ commands =
     pre-commit run --all-files --show-diff-on-failure
     ; Run mypy outside pre-commit because pre-commit runs mypy in a venv
     ; that doesn't have dependencies or their type annotations installed.
-    mypy github/ tests/
+    mypy github tests
 
 [testenv:docs]
 basepython = python3.6
@@ -30,3 +30,8 @@ commands = sphinx-build doc build
 max-line-length = 88
 select = C,E,F,W
 ignore = E266, E501, W503
+
+[mypy]
+python_version = 3.6
+ignore_missing_imports = True
+namespace_packages = True