Stopping build wheel for python 2.7

kokoro/release/python/linux/build_artifacts.sh

@@ -59,7 +59,6 @@ build_crosscompiled_aarch64_artifact_version() {
   build_artifact_version $@
 }
 
-build_artifact_version 2.7
 build_artifact_version 3.5
 build_artifact_version 3.6
 build_artifact_version 3.7

kokoro/release/python/macos/build_artifacts.sh

@@ -51,7 +51,6 @@ build_artifact_version() {
 }
 
 export MB_PYTHON_OSX_VER=10.9
-build_artifact_version 2.7
 build_artifact_version 3.6
 build_artifact_version 3.7
 build_artifact_version 3.8

python/protobuf_distutils/setup.py

@@ -52,8 +52,6 @@ setup(
         "Operating System :: OS Independent",
         # These Python versions should match the protobuf package:
         "Programming Language :: Python",
-        "Programming Language :: Python :: 2",
-        "Programming Language :: Python :: 2.7",
         "Programming Language :: Python :: 3",
         "Programming Language :: Python :: 3.3",
         "Programming Language :: Python :: 3.4",

python/setup.py

@@ -272,9 +272,6 @@ if __name__ == '__main__':
 
   # Keep this list of dependencies in sync with tox.ini.
   install_requires = ['six>=1.9']
-  if sys.version_info <= (2,7):
-    install_requires.append('ordereddict')
-    install_requires.append('unittest2')
 
   setup(
       name='protobuf',
@@ -288,8 +285,6 @@ if __name__ == '__main__':
       license='3-Clause BSD License',
       classifiers=[
         "Programming Language :: Python",
-        "Programming Language :: Python :: 2",
-        "Programming Language :: Python :: 2.7",
         "Programming Language :: Python :: 3",
         "Programming Language :: Python :: 3.3",
         "Programming Language :: Python :: 3.4",

python/tox.ini

@@ -1,6 +1,6 @@
 [tox]
 envlist =
-    py{27,33,34,35,36,37,38,39}-{cpp,python}
+    py{33,34,35,36,37,38,39}-{cpp,python}
 
 [testenv]
 usedevelop=true
@@ -14,8 +14,6 @@ setenv =
 commands =
     python setup.py -q build_py
     python: python setup.py -q build
-    # --warnings_as_errors disabled for Python 2.7 because _POSIX_C_SOURCE and _XOPEN_SOURCE are redefined
-    py27-cpp: python setup.py -q build --cpp_implementation --compile_static_extension
     py{33,34,35,36,37,38,39}-cpp: python setup.py -q build --cpp_implementation --warnings_as_errors --compile_static_extension
     python: python setup.py -q test -q
     cpp: python setup.py -q test -q --cpp_implementation
@@ -24,5 +22,3 @@ commands =
 deps =
     # Keep this list of dependencies in sync with setup.py.
     six>=1.9
-    py26: ordereddict
-    py26: unittest2