fix!: drop support for Python 2.7 / 3.5

CONTRIBUTING.rst

@@ -1,4 +1,3 @@
-.. Generated by synthtool. DO NOT EDIT!
 ############
 Contributing
 ############
@@ -69,7 +68,6 @@ We use `nox <https://nox.readthedocs.io/en/latest/>`__ to instrument our tests.
 
 - To test your changes, run unit tests with ``nox``::
 
-    $ nox -s unit-2.7
     $ nox -s unit-3.8
     $ ...
 
@@ -80,8 +78,8 @@ We use `nox <https://nox.readthedocs.io/en/latest/>`__ to instrument our tests.
 
   .. note::
 
-    The unit tests and system tests are described in the
-    ``noxfile.py`` files in each directory.
+    The unit tests tests are described in the ``noxfile.py`` files
+    in each directory.
 
 .. nox: https://pypi.org/project/nox/
 
@@ -136,32 +134,6 @@ Exceptions to PEP8:
   "Function-Under-Test"), which is PEP8-incompliant, but more readable.
   Some also use a local variable, ``MUT`` (short for "Module-Under-Test").
 
-********************
-Running System Tests
-********************
-
-- To run system tests, you can execute::
-
-   # Run all system tests
-   $ nox -s system-3.8
-   $ nox -s system-2.7
-
-   # Run a single system test
-   $ nox -s system-3.8 -- -k <name of test>
-
-
-  .. note::
-
-      System tests are only configured to run under Python 2.7 and
-      Python 3.8. For expediency, we do not run them in older versions
-      of Python 3.
-
-  This alone will not run the tests. You'll need to change some local
-  auth settings and change some configuration in your project to
-  run all the tests.
-
-- System tests will be run against an actual project. You should use local credentials from gcloud when possible. See `Best practices for application authentication <https://cloud.google.com/docs/authentication/best-practices-applications#local_development_and_testing_with_the>`__. Some tests require a service account. For those tests see `Authenticating as a service account <https://cloud.google.com/docs/authentication/production>`__.
-
 *************
 Test Coverage
 *************

README.rst

@@ -1,7 +1,7 @@
 Core Library for Google Client Libraries
 ========================================
 
-|pypi| |versions| 
+|pypi| |versions|
 
 This library is not meant to stand-alone. Instead it defines
 common helpers used by all Google API clients. For more information, see the
@@ -16,8 +16,4 @@ common helpers used by all Google API clients. For more information, see the
 
 Supported Python Versions
 -------------------------
-Python >= 3.5
-
-Deprecated Python Versions
---------------------------
-Python == 2.7. Python 2.7 support will be removed on January 1, 2020.
+Python >= 3.6

google/api_core/version.py

@@ -12,4 +12,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = "1.30.0"
+__version__ = "2.0.0-b1"

noxfile.py

@@ -24,6 +24,7 @@
 
 _MINIMAL_ASYNCIO_SUPPORT_PYTHON_VERSION = [3, 6]
 
+
 def _greater_or_equal_than_36(version_string):
     tokens = version_string.split(".")
     for i, token in enumerate(tokens):
@@ -77,13 +78,13 @@ def default(session):
         session.run(*pytest_args)
 
 
-@nox.session(python=["2.7", "3.6", "3.7", "3.8", "3.9"])
+@nox.session(python=["3.6", "3.7", "3.8", "3.9"])
 def unit(session):
     """Run the unit test suite."""
     default(session)
 
 
-@nox.session(python=["2.7", "3.6", "3.7", "3.8", "3.9"])
+@nox.session(python=["3.6", "3.7", "3.8", "3.9"])
 def unit_grpc_gcp(session):
     """Run the unit test suite with grpcio-gcp installed."""
     constraints_path = str(

owlbot.py

@@ -14,8 +14,6 @@
 
 """This script is used to synthesize generated parts of this library."""
 
-import re
-
 import synthtool as s
 from synthtool import gcp
 
@@ -24,8 +22,15 @@
 # ----------------------------------------------------------------------------
 # Add templated files
 # ----------------------------------------------------------------------------
+excludes = [
+    "noxfile.py",  # pytype
+    "setup.cfg",  # pytype
+    ".flake8",  # flake8-import-order, layout
+    ".coveragerc",  # layout
+    "CONTRIBUTING.rst",  # no systests
+]
 templated_files = common.py_library(cov_level=100)
-s.move(templated_files, excludes=["noxfile.py", ".flake8", ".coveragerc", "setup.cfg"])
+s.move(templated_files, excludes=excludes)
 
 # Add pytype support
 s.replace(

setup.py

@@ -86,10 +86,7 @@
         "Intended Audience :: Developers",
         "License :: OSI Approved :: Apache Software License",
         "Programming Language :: Python",
-        "Programming Language :: Python :: 2",
-        "Programming Language :: Python :: 2.7",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
@@ -102,7 +99,7 @@
     namespace_packages=namespaces,
     install_requires=dependencies,
     extras_require=extras,
-    python_requires=">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*",
+    python_requires=">=3.6",
     include_package_data=True,
     zip_safe=False,
 )