feat(pubsub): drop support for Python 3.7, 3.8, and 3.9

chalmerlowe · chalmerlowe · commit 35c1a58dc5b8 · 2026-05-21T18:32:20.000-04:00
Regenerates google-cloud-pubsub using the custom v0.14.0 pseudo-version librarian build on top of pristine, up-to-date main.

- Natively drop Python 3.9 support in constraints and python_requires pins using generator 1.32.0

- Correctly generates setup.py with grpcio&gt;=1.44.0 natively, avoiding any version regressions

- Segregates all post-processing EOL warning rules into package-specific pubsub-integration.yaml, keeping global configs clean

- Clean up collections.abc.KeysView typing compatibility fallback try-except in leaser.py

- Manually updates contributing.rst warning filters and commands to drop Python 3.7-3.9

- Restores credentials_file warning filter and adds opentelemetry SelectableGroups filter in pytest.ini

- Passes all Nox docker validations (unit, lint, prerelease_deps) cleanly in parallel
diff --git a/.librarian/generator-input/client-post-processing/pubsub-integration.yaml b/.librarian/generator-input/client-post-processing/pubsub-integration.yaml
@@ -528,10 +528,32 @@ replacements:
     after: 'grpcio==1.51.3'
     count: 1
 
+
   - paths:
-      - "packages/google-cloud-pubsub/setup.py"
-    before: '"grpcio-status >= 1\.44\.0",'
-    after: '"grpcio-status >= 1.51.3",'
+      - "packages/google-cloud-pubsub/google/cloud/pubsub_v1/subscriber/_protocol/leaser.py"
+    before: "try:\\s*\\n\\s*from collections\\.abc import KeysView[\\s\\S]*?from typing import KeysView"
+    after: "from collections.abc import KeysView"
+    count: 1
+
+  - paths:
+      - "packages/google-cloud-pubsub/CONTRIBUTING.rst"
+    before: "- The feature must work fully on the following CPython versions:\n  3.9, 3.10, 3.11, 3.12, 3.13 and 3.14 on both UNIX and Windows."
+    after: "- The feature must work fully on the following CPython versions:\n  3.10, 3.11, 3.12, 3.13 and 3.14 on both UNIX and Windows."
+    count: 1
+
+  - paths:
+      - "packages/google-cloud-pubsub/CONTRIBUTING.rst"
+    before: "We support:\n\n-  `Python 3.9`_\n-  `Python 3.10`_\n-  `Python 3.11`_\n-  `Python 3.12`_\n-  `Python 3.13`_\n-  `Python 3.14`_\n\n.. _Python 3.9: https://docs.python.org/3.9/\n.. _Python 3.10: https://docs.python.org/3.10/"
+    after: "We support:\n\n-  `Python 3.10`_\n-  `Python 3.11`_\n-  `Python 3.12`_\n-  `Python 3.13`_\n-  `Python 3.14`_\n\n.. _Python 3.10: https://docs.python.org/3.10/"
+    count: 1
+
+  - paths:
+      - "packages/google-cloud-pubsub/CONTRIBUTING.rst"
+    before: "We also explicitly decided to support Python 3 beginning with version 3.7."
+    after: "We also explicitly decided to support Python 3 beginning with version 3.10."
     count: 1
 
 
+
+
+
diff --git a/librarian.yaml b/librarian.yaml
@@ -1659,7 +1659,7 @@ libraries:
     version: 2.38.0
     apis:
       - path: google/pubsub/v1
-    skip_generate: true
+
     python:
       library_type: GAPIC_COMBO
       opt_args_by_api:
diff --git a/packages/google-cloud-pubsub/CONTRIBUTING.rst b/packages/google-cloud-pubsub/CONTRIBUTING.rst
@@ -22,7 +22,7 @@ In order to add a feature:
   documentation.
 
 - The feature must work fully on the following CPython versions:
-  3.9, 3.10, 3.11, 3.12, 3.13 and 3.14 on both UNIX and Windows.
+  3.10, 3.11, 3.12, 3.13 and 3.14 on both UNIX and Windows.
 
 - The feature must not add unnecessary dependencies (where
   "unnecessary" is of course subjective, but new dependencies should
@@ -221,14 +221,12 @@ Supported Python Versions
 
 We support:
 
--  `Python 3.9`_
 -  `Python 3.10`_
 -  `Python 3.11`_
 -  `Python 3.12`_
 -  `Python 3.13`_
 -  `Python 3.14`_
 
-.. _Python 3.9: https://docs.python.org/3.9/
 .. _Python 3.10: https://docs.python.org/3.10/
 .. _Python 3.11: https://docs.python.org/3.11/
 .. _Python 3.12: https://docs.python.org/3.12/
@@ -241,7 +239,7 @@ Supported versions can be found in our ``noxfile.py`` `config`_.
 .. _config: https://github.com/googleapis/python-pubsub/blob/main/noxfile.py
 
 
-We also explicitly decided to support Python 3 beginning with version 3.7.
+We also explicitly decided to support Python 3 beginning with version 3.10.
 Reasons for this include:
 
 -  Encouraging use of newest versions of Python 3
diff --git a/packages/google-cloud-pubsub/README.rst b/packages/google-cloud-pubsub/README.rst
@@ -62,14 +62,15 @@ Supported Python Versions
 Our client libraries are compatible with all current `active`_ and `maintenance`_ versions of
 Python.
 
-Python >= 3.9, including 3.14
+Python >= 3.10, including 3.14
 
 .. _active: https://devguide.python.org/devcycle/#in-development-main-branch
 .. _maintenance: https://devguide.python.org/devcycle/#maintenance-branches
 
 Unsupported Python Versions
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
-Python <= 3.8
+Python <= 3.9
+
 
 If you are using an `end-of-life`_
 version of Python, we recommend that you update as soon as possible to an actively supported version.
diff --git a/packages/google-cloud-pubsub/docs/README.rst b/packages/google-cloud-pubsub/docs/README.rst
@@ -62,14 +62,15 @@ Supported Python Versions
 Our client libraries are compatible with all current `active`_ and `maintenance`_ versions of
 Python.
 
-Python >= 3.9, including 3.14
+Python >= 3.10, including 3.14
 
 .. _active: https://devguide.python.org/devcycle/#in-development-main-branch
 .. _maintenance: https://devguide.python.org/devcycle/#maintenance-branches
 
 Unsupported Python Versions
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
-Python <= 3.8
+Python <= 3.9
+
 
 If you are using an `end-of-life`_
 version of Python, we recommend that you update as soon as possible to an actively supported version.
diff --git a/packages/google-cloud-pubsub/google/cloud/pubsub_v1/subscriber/_protocol/leaser.py b/packages/google-cloud-pubsub/google/cloud/pubsub_v1/subscriber/_protocol/leaser.py
@@ -20,22 +20,14 @@
 import threading
 import time
 import typing
+from collections.abc import KeysView
 from typing import Dict, Iterable, Optional, Union
 
 from google.cloud.pubsub_v1.open_telemetry.subscribe_opentelemetry import (
     SubscribeOpenTelemetry,
 )
-from google.cloud.pubsub_v1.subscriber._protocol.dispatcher import _MAX_BATCH_LATENCY
-
-try:
-    from collections.abc import KeysView
-
-    KeysView[None]  # KeysView is only subscriptable in Python 3.9+
-except TypeError:
-    # Deprecated since Python 3.9, thus only use as a fallback in older Python versions
-    from typing import KeysView
-
 from google.cloud.pubsub_v1.subscriber._protocol import requests
+from google.cloud.pubsub_v1.subscriber._protocol.dispatcher import _MAX_BATCH_LATENCY
 
 if typing.TYPE_CHECKING:  # pragma: NO COVER
     from google.cloud.pubsub_v1.subscriber._protocol.streaming_pull_manager import (
diff --git a/packages/google-cloud-pubsub/pytest.ini b/packages/google-cloud-pubsub/pytest.ini
@@ -17,12 +17,9 @@ filterwarnings =
     ignore:.*pkg_resources.declare_namespace:DeprecationWarning
     ignore:.*pkg_resources is deprecated as an API:DeprecationWarning
     # Remove once https://github.com/googleapis/gapic-generator-python/issues/2303 is fixed
-    ignore:The python-bigquery library will stop supporting Python 3.7:PendingDeprecationWarning
-    # Remove once we move off credential files https://github.com/googleapis/google-auth-library-python/pull/1812
-    # Note that these are used in tests only
-    ignore:Your config file at [/home/kbuilder/.docker/config.json] contains these credential helper entries:DeprecationWarning
+    # Remove once opentelemetry stops triggering SelectableGroups DeprecationWarning on Python 3.11+
+    ignore:.*SelectableGroups dict interface is deprecated.*:DeprecationWarning
+    # Remove once credentials_file is completely removed
     ignore:The `credentials_file` argument is deprecated because of a potential security risk:DeprecationWarning
-    ignore:You are using a Python version.*which Google will stop supporting in new releases of google\.api_core.*:FutureWarning
-    ignore:You are using a non-supported Python version \(([\d\.]+)\)\. Google will not post any further updates to google\.api_core.*:FutureWarning
     # These google library EOL warnings for Python versions don't matter for the purposes of a test.
     ignore::FutureWarning:google.*:
