Remove enum34 from requirements.txt

requirements.txt

@@ -1,7 +1,6 @@
 # GRPC Python setup requirements
 coverage>=4.0
 cython>=0.29.8
-enum34>=1.0.4
 protobuf>=3.5.0.post1, < 4.0dev
 six>=1.10
 wheel>=0.29

src/python/grpcio_tests/setup.py

@@ -38,8 +38,7 @@ PACKAGE_DIRECTORIES = {
 }
 
 INSTALL_REQUIRES = (
-    'coverage>=4.0', 'enum34>=1.0.4',
-    'grpcio>={version}'.format(version=grpc_version.VERSION),
+    'coverage>=4.0', 'grpcio>={version}'.format(version=grpc_version.VERSION),
     'grpcio-channelz>={version}'.format(version=grpc_version.VERSION),
     'grpcio-status>={version}'.format(version=grpc_version.VERSION),
     'grpcio-tools>={version}'.format(version=grpc_version.VERSION),
@@ -48,7 +47,7 @@ INSTALL_REQUIRES = (
     'google-auth>=1.17.2', 'requests>=2.14.2')
 
 if not PY3:
-    INSTALL_REQUIRES += ('futures>=2.2.0',)
+    INSTALL_REQUIRES += ('futures>=2.2.0', 'enum34>=1.0.4')
 
 COMMAND_CLASS = {
     # Run `preprocess` *before* doing any packaging!

tools/run_tests/artifacts/build_artifact_python.sh

@@ -104,7 +104,7 @@ then
 
   if [ "$("$PYTHON" -c "import sys; print(sys.version_info[0])")" == "2" ]
   then
-    "${PIP}" install futures>=2.2.0
+    "${PIP}" install futures>=2.2.0 enum>=1.0.4
   fi
 
   "${PIP}" install grpcio --no-index --find-links "file://$ARTIFACT_DIR/"