Address PR check failures.

Author: nbayati

google/auth/_oauth2client.py

@@ -127,7 +127,7 @@ def _convert_appengine_app_assertion_credentials(credentials):
     oauth2client.contrib.gce.AppAssertionCredentials: _convert_gce_app_assertion_credentials,
 }
 
-if _HAS_APPENGINE:
+if _HAS_APPENGINE:  # pragma: no cover
     _CLASS_CONVERSION_MAP[
         oauth2client.contrib.appengine.AppAssertionCredentials
     ] = _convert_appengine_app_assertion_credentials

mypy.ini

@@ -1,3 +1,3 @@
 [mypy]
-python_version = 3.7
+python_version = 3.9
 namespace_packages = True

noxfile.py

@@ -105,6 +105,7 @@ def mypy(session):
         "types-requests",
         "types-setuptools",
         "types-mock",
+        "types-pytest",
     )
     session.run("mypy", "-p", "google", "-p", "tests", "-p", "tests_async")
 

tests/test_agent_identity_utils.py

@@ -17,8 +17,8 @@
 import json
 
 import mock
-import pytest
 from cryptography import x509
+import pytest
 
 from google.auth import _agent_identity_utils
 from google.auth import environment_vars