feat: Adds Python 3.13 support

.github/workflows/lint.yml

@@ -12,7 +12,7 @@ jobs:
     - name: Setup Python
       uses: actions/setup-python@v5
       with:
-        python-version: "3.8"
+        python-version: "3.10"
     - name: Install nox
       run: |
         python -m pip install --upgrade setuptools pip wheel

.github/workflows/unittest.yml

@@ -45,7 +45,7 @@ jobs:
     - name: Setup Python
       uses: actions/setup-python@v5
       with:
-        python-version: "3.8"
+        python-version: "3.10"
     - name: Install coverage
       run: |
         python -m pip install --upgrade setuptools pip wheel

.kokoro/presubmit/presubmit.cfg

@@ -1 +1,6 @@
-# Format: //devtools/kokoro/config/proto/build.proto
+# Format: //devtools/kokoro/config/proto/build.proto
+
+env_vars: {
+    key: "NOX_SESSION"
+    value: "system blacken format"
+}

CONTRIBUTING.rst

@@ -143,12 +143,12 @@ Running System Tests
    $ nox -s system
 
    # Run a single system test
-   $ nox -s system-3.8 -- -k <name of test>
+   $ nox -s system-3.10 -- -k <name of test>
 
 
   .. note::
 
-      System tests are only configured to run under Python 3.8.
+      System tests are only configured to run under Python 3.10.
       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

noxfile.py

@@ -32,7 +32,7 @@
 ISORT_VERSION = "isort==5.11.0"
 LINT_PATHS = ["docs", "google", "tests", "noxfile.py", "setup.py"]
 
-DEFAULT_PYTHON_VERSION = "3.8"
+DEFAULT_PYTHON_VERSION = "3.10"
 
 UNIT_TEST_PYTHON_VERSIONS: List[str] = [
     "3.7",
@@ -56,7 +56,7 @@
 UNIT_TEST_EXTRAS: List[str] = []
 UNIT_TEST_EXTRAS_BY_PYTHON: Dict[str, List[str]] = {}
 
-SYSTEM_TEST_PYTHON_VERSIONS: List[str] = ["3.8"]
+SYSTEM_TEST_PYTHON_VERSIONS: List[str] = ["3.10"]
 SYSTEM_TEST_STANDARD_DEPENDENCIES: List[str] = [
     "mock",
     "pytest",

owlbot.py

@@ -27,9 +27,28 @@
 # ----------------------------------------------------------------------------
 templated_files = common.py_library(
     microgenerator=True,
+    default_python_version="3.10",
+    system_test_python_versions=["3.10"],
 )
 s.move(templated_files, excludes=["docs/multiprocessing.rst", "README.rst"])
 
+s.replace(
+    ".github/workflows/lint.yml",
+    'python-version: "3.8"',
+    'python-version: "3.10"'
+)
+
+s.replace(
+    ".kokoro/presubmit/presubmit.cfg",
+    """# Format: //devtools/kokoro/config/proto/build.proto""",
+    """# Format: //devtools/kokoro/config/proto/build.proto
+
+env_vars: {
+    key: "NOX_SESSION"
+    value: "system blacken format"
+}""",
+)
+
 python.py_samples(skip_readmes=True)
 
 s.replace(
@@ -40,5 +59,6 @@
     session.install\("--pre", "grpcio!=1.52.0rc1"\)""",
     ""
 )
+
 s.shell.run(["nox", "-s", "blacken"], hide_output=False)
 

setup.py

@@ -83,6 +83,7 @@
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
         "Programming Language :: Python :: 3.12",
+        "Programming Language :: Python :: 3.13",
         "Operating System :: OS Independent",
         "Topic :: Internet",
     ],