feat: add pandas-gbq capability helper by shuoweil · Pull Request #17957 · googleapis/google-cloud-python

shuoweil · 2026-07-30T21:06:04Z

Introduces PandasGBQVersions in _versions_helpers.py to support backend delegation and telemetry:

Capability Detection: Adds PandasGBQVersions with installed_version, delegation_api_version, and is_delegation_supported properties.
Safe Fallback: Handles missing, outdated, or corrupted pandas-gbq installations gracefully by defaulting to version 0.0.0 / delegation version 0.
Unit Tests: Adds full unit test coverage for cached access, valid versions, uninstalled modules, and corrupted environments in test__versions_helpers.py.

Fixes #<540939659> 🦕

gemini-code-assist

Code Review

This pull request introduces the PandasGBQVersions helper class to manage versioning and delegation API support for the pandas-gbq package, along with comprehensive unit tests. However, the properties installed_version and delegation_api_version check for cached values but fail to actually assign and store the parsed values into their respective cache variables (self._installed_version and self._delegation_api_version), defeating the caching mechanism.

parthea · 2026-07-31T14:27:59Z

@shuoweil , Please see #17958 (comment) for the all-tests and mypy-status checks

shuoweil · 2026-07-31T19:02:56Z

@shuoweil , Please see #17958 (comment) for the all-tests and mypy-status checks

Thanks, Anthonios.

shuoweil · 2026-07-31T19:31:00Z

I need to merge #17964 first. It contains testcase fixed.

…_helpers.py Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

sycai · 2026-08-04T18:15:10Z

+        return self._installed_version
+
+    @property
+    def delegation_api_version(self) -> int:


Maybe we should use packaing.version.Version instead of int for the return type? Will the delegation api version follow the version format of major.minor.patch ?

Good suggestion. Updated delegation_api_version to return packaging.version.Version and defined _MIN_PANDAS_GBQ_DELEGATION_VERSION = packaging.version.Version("1.0.0").

sycai · 2026-08-04T18:17:36Z

+    with mock.patch.dict(sys.modules, {"google.cloud.bigquery_storage": None}):
+        with mock.patch.dict(cloud.__dict__):


nit: shall we chain the context managers with a single with? Same suggestion applies to other places.

Done. Consolidated nested context managers into single parenthesized with(..., ...) blocks across test_returns_none_with_bqstorage_uninstalled and test_raises_error_with_bqstorage_uninstalled.

sycai · 2026-08-04T18:19:18Z

+def test_pandas_gbq_is_delegation_supported_true():
+    versions = _versions_helpers.PandasGBQVersions()
+    versions._delegation_api_version = 1
+    assert versions.is_delegation_supported is True


super nit: let's place an empty line above the assertion.

Done. Added blank lines before all assertions.

sycai · 2026-08-04T18:19:44Z

+def test_pandas_gbq_is_delegation_supported_false():
+    versions = _versions_helpers.PandasGBQVersions()
+    versions._delegation_api_version = 0
+    assert versions.is_delegation_supported is False


super nit: let's add an empty line above the assertion.

Done. Added blank lines before all assertions.

sycai · 2026-08-04T18:27:02Z

+    def __init__(self):
+        self._installed_version = None
+        self._delegation_api_version = None


[No action need in this PR] It seems we are following the existing pattern in the codebase, but it is not very "Pythonic" as it uses classes excessively.

I think ideally we should replace all these classes and lazy evaluations with top-level functions and eager evaluations. We should also return None in case the package is not import-able.

We may consider creating a bug for a codebase cleanup, and loop in @tswast for his thoughts on this.

Thanks for the insight. Agree with keeping this PR strictly scoped to the existing _versions_helpers.py architecture (PyarrowVersions, BQStorageVersions, PandasVersions). Started the offline discussion.

sycai · 2026-08-04T18:27:48Z

+def test_installed_pandas_gbq_version_returns_cached():
+    versions = _versions_helpers.PandasGBQVersions()
+    versions._installed_version = object()
+    assert versions.installed_version is versions._installed_version


super nit: let's place an empty line above to demarcate "action" and "assert" blocks: go/unit-testing-practices?polyglot=java#structure

Done. Formatted all cache version tests with explicit blank lines.

🤖 I have created a release *beep* *boop* --- <details><summary>bigquery-magics: 0.15.1</summary> ## [0.15.1](bigquery-magics-v0.15.0...bigquery-magics-v0.15.1) (2026-08-06) ### Bug Fixes * bump grpcio to 1.59.0; require Python 3.10+ ([#17351](#17351)) ([a53487a](a53487a)) * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>gapic-generator: 1.38.0</summary> ## [1.38.0](gapic-generator-v1.37.1...gapic-generator-v1.38.0) (2026-08-06) ### Features * **generator:** delegate REST transcoding to google-api-core ([#17766](#17766)) ([7b05aab](7b05aab)) * **generator:** gapic generator centralization routing ([#17816](#17816)) ([32a2442](32a2442)) ### Bug Fixes * add typing for header_params ([#17914](#17914)) ([9e98b93](9e98b93)) * **api-core:** use truthiness check in setup_request_id to support proto-plus messages ([#18000](#18000)) ([ad8f93c](ad8f93c)) * avoid retaining routing parameter instances in cache ([#17961](#17961)) ([f64ada2](f64ada2)) * bump aiohttp from 3.13.5 to 3.14.3 in /packages/gapic-generator ([#17990](#17990)) ([6ff5815](6ff5815)) * bump cryptography from 48.0.1 to 50.0.0 in /packages/gapic-generator ([#17991](#17991)) ([d607f25](d607f25)) * bump grpcio to 1.59.0; require Python 3.10+ ([#17351](#17351)) ([a53487a](a53487a)) * **generator:** use flat_ref_types in test templates and delete remove-unused-imports ([#17900](#17900)) ([395f764](395f764)) * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) * resolve collision with reserved words in samples ([#17912](#17912)) ([588cda9](588cda9)) * upgrade Protobuf and gRPC in WORKSPACE ([#17882](#17882)) ([5b5ece5](5b5ece5)) </details> <details><summary>gcp-sphinx-docfx-yaml: 3.3.1</summary> ## [3.3.1](gcp-sphinx-docfx-yaml-v3.3.0...gcp-sphinx-docfx-yaml-v3.3.1) (2026-08-06) ### Bug Fixes * bump grpcio to 1.59.0; require Python 3.10+ ([#17351](#17351)) ([a53487a](a53487a)) * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>google-ads-admanager: 0.10.1</summary> ## [0.10.1](google-ads-admanager-v0.10.0...google-ads-admanager-v0.10.1) (2026-08-06) ### Features * update googleapis and regenerate ([#17893](#17893)) ([e70ab6f](e70ab6f)) </details> <details><summary>google-api-core: 2.34.0</summary> ## [2.34.0](google-api-core-v2.33.0...google-api-core-v2.34.0) (2026-08-06) ### Features * Add Feature Gating configuration helpers. ([#17524](#17524)) ([eceea95](eceea95)) * **api-core:** centralize rest transcoding helpers ([#17765](#17765)) ([4f21b8b](4f21b8b)) ### Bug Fixes * **api-core:** use truthiness check in setup_request_id to support proto-plus messages ([#18000](#18000)) ([ad8f93c](ad8f93c)) * bump grpcio to 1.59.0; require Python 3.10+ ([#17351](#17351)) ([a53487a](a53487a)) * deduplicate x-goog-api-client headers ([#17616](#17616)) ([6167e41](6167e41)) * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>google-apps-chat: 0.10.4</summary> ## [0.10.4](google-apps-chat-v0.10.3...google-apps-chat-v0.10.4) (2026-08-06) ### Features * update googleapis and regenerate ([#17893](#17893)) ([e70ab6f](e70ab6f)) </details> <details><summary>google-auth: 2.56.3</summary> ## [2.56.3](google-auth-v2.56.2...google-auth-v2.56.3) (2026-08-06) ### Bug Fixes * **auth:** avoid creating mTLS SSL context for custom async transports ([#17825](#17825)) ([fbe33f9](fbe33f9)), refs [#17622](#17622) * **auth:** only trigger mTLS certificate rotation on mTLS endpoints ([#17928](#17928)) ([f7b49ea](f7b49ea)) * **auth:** properly extract stdout from gnubby webauthn plugin failures ([#17885](#17885)) ([744e826](744e826)) * deduplicate x-goog-api-client headers ([#17616](#17616)) ([6167e41](6167e41)) * **oauth2:** avoid redundant JWKS network fetches ([#17891](#17891)) ([de53298](de53298)) ### Performance Improvements * **auth:** use generator expression in any() to allow short-circuiting ([735e565](735e565)) * **auth:** use generator expression in any() to allow short-circuiting ([#17937](#17937)) ([735e565](735e565)) </details> <details><summary>google-auth-httplib2: 0.4.1</summary> ## [0.4.1](google-auth-httplib2-v0.4.0...google-auth-httplib2-v0.4.1) (2026-08-06) ### Bug Fixes * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>google-cloud-access-context-manager: 0.6.1</summary> ## [0.6.1](google-cloud-access-context-manager-v0.6.0...google-cloud-access-context-manager-v0.6.1) (2026-08-06) ### Bug Fixes * bump grpcio to 1.59.0; 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require Python 3.10+ ([#17351](#17351)) ([a53487a](a53487a)) </details> <details><summary>google-cloud-binary-authorization: 1.19.1</summary> ## [1.19.1](google-cloud-binary-authorization-v1.19.0...google-cloud-binary-authorization-v1.19.1) (2026-08-06) ### Bug Fixes * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>google-cloud-build: 3.38.1</summary> ## [3.38.1](google-cloud-build-v3.38.0...google-cloud-build-v3.38.1) (2026-08-06) ### Bug Fixes * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>google-cloud-commerceproducer: 0.1.1</summary> ## [0.1.1](google-cloud-commerceproducer-v0.1.0...google-cloud-commerceproducer-v0.1.1) (2026-08-06) ### Features * update googleapis and regenerate ([#17893](#17893)) ([e70ab6f](e70ab6f)) </details> <details><summary>google-cloud-containeranalysis: 2.22.1</summary> ## [2.22.1](google-cloud-containeranalysis-v2.22.0...google-cloud-containeranalysis-v2.22.1) (2026-08-06) ### Bug Fixes * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>google-cloud-core: 2.6.1</summary> ## [2.6.1](google-cloud-core-v2.6.0...google-cloud-core-v2.6.1) (2026-08-06) ### Bug Fixes * bump grpcio to 1.59.0; 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require Python 3.10+ ([#17351](#17351)) ([a53487a](a53487a)) </details> <details><summary>google-cloud-quotas: 0.6.2</summary> ## [0.6.2](google-cloud-quotas-v0.6.1...google-cloud-quotas-v0.6.2) (2026-08-06) ### Features * update googleapis and regenerate ([#17893](#17893)) ([e70ab6f](e70ab6f)) </details> <details><summary>google-cloud-redis-cluster: 0.5.2</summary> ## [0.5.2](google-cloud-redis-cluster-v0.5.1...google-cloud-redis-cluster-v0.5.2) (2026-08-06) ### Features * update googleapis and regenerate ([#17893](#17893)) ([e70ab6f](e70ab6f)) </details> <details><summary>google-cloud-service-control: 1.21.0</summary> ## [1.21.0](google-cloud-service-control-v1.20.0...google-cloud-service-control-v1.21.0) (2026-08-06) ### Features * update googleapis and regenerate ([#17893](#17893)) ([e70ab6f](e70ab6f)) </details> <details><summary>google-cloud-spanner: 3.69.1</summary> ## [3.69.1](google-cloud-spanner-v3.69.0...google-cloud-spanner-v3.69.1) (2026-08-06) ### Bug Fixes * bump grpcio to 1.59.0; require Python 3.10+ ([#17351](#17351)) ([a53487a](a53487a)) * **metrics:** fix GFE and AFE metrics publishing ([#17561](#17561)) ([abf1178](abf1178)) * **spanner:** escape embedded backticks in dbapi escape_name ([#17810](#17810)) ([c8b0b28](c8b0b28)) * **spanner:** implement dict protocol and nested unwrapping for JsonObject ([#17915](#17915)) ([06c1f05](06c1f05)), refs [#15870](#15870) </details> <details><summary>google-cloud-storage: 3.13.1</summary> ## [3.13.1](google-cloud-storage-v3.13.0...google-cloud-storage-v3.13.1) (2026-08-06) ### Bug Fixes * bump grpcio to 1.59.0; require Python 3.10+ ([#17351](#17351)) ([a53487a](a53487a)) * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>google-cloud-storage-control: 1.13.0</summary> ## [1.13.0](google-cloud-storage-control-v1.12.0...google-cloud-storage-control-v1.13.0) (2026-08-06) ### Features * update googleapis and regenerate ([#17893](#17893)) ([e70ab6f](e70ab6f)) </details> <details><summary>google-cloud-support: 0.5.2</summary> ## [0.5.2](google-cloud-support-v0.5.1...google-cloud-support-v0.5.2) (2026-08-06) ### Features * update googleapis and regenerate ([#17933](#17933)) ([f7a23a0](f7a23a0)) </details> <details><summary>google-cloud-tasks: 2.24.0</summary> ## [2.24.0](google-cloud-tasks-v2.23.0...google-cloud-tasks-v2.24.0) (2026-08-06) ### Features * update googleapis and regenerate ([#17893](#17893)) ([e70ab6f](e70ab6f)) </details> <details><summary>google-cloud-testutils: 1.9.2</summary> ## [1.9.2](google-cloud-testutils-v1.9.1...google-cloud-testutils-v1.9.2) (2026-08-06) ### Bug Fixes * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>google-developer-knowledge: 0.1.1</summary> ## [0.1.1](google-developer-knowledge-v0.1.0...google-developer-knowledge-v0.1.1) (2026-08-06) ### Features * update googleapis and regenerate ([#17893](#17893)) ([e70ab6f](e70ab6f)) </details> <details><summary>google-maps-navconnect: 0.2.1</summary> ## [0.2.1](google-maps-navconnect-v0.2.0...google-maps-navconnect-v0.2.1) (2026-08-06) ### Features * update googleapis and regenerate ([#17893](#17893)) ([e70ab6f](e70ab6f)) </details> <details><summary>google-resumable-media: 2.10.1</summary> ## [2.10.1](google-resumable-media-v2.10.0...google-resumable-media-v2.10.1) (2026-08-06) ### Bug Fixes * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>googleapis-common-protos: 1.75.1</summary> ## [1.75.1](googleapis-common-protos-v1.75.0...googleapis-common-protos-v1.75.1) (2026-08-06) ### Bug Fixes * bump grpcio to 1.59.0; require Python 3.10+ ([#17351](#17351)) ([a53487a](a53487a)) * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>grafeas: 1.24.0</summary> ## [1.24.0](grafeas-v1.23.0...grafeas-v1.24.0) (2026-08-06) ### Features * update googleapis and regenerate ([#17933](#17933)) ([f7a23a0](f7a23a0)) </details> <details><summary>grpc-google-iam-v1: 0.14.5</summary> ## [0.14.5](grpc-google-iam-v1-v0.14.4...grpc-google-iam-v1-v0.14.5) (2026-08-06) ### Bug Fixes * bump grpcio to 1.59.0; require Python 3.10+ ([#17351](#17351)) ([a53487a](a53487a)) * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>proto-plus: 1.28.3</summary> ## [1.28.3](proto-plus-v1.28.2...proto-plus-v1.28.3) (2026-08-06) ### Bug Fixes * bump grpcio to 1.59.0; require Python 3.10+ ([#17351](#17351)) ([a53487a](a53487a)) * **proto-plus:** add context to TypeErrors during message manipulation ([#17682](#17682)) ([08f21a6](08f21a6)) * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>sqlalchemy-bigquery: 1.17.2</summary> ## [1.17.2](sqlalchemy-bigquery-v1.17.1...sqlalchemy-bigquery-v1.17.2) (2026-08-06) ### Bug Fixes * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> --- This PR was generated with [Release Please](https://github.com/googleapis/release-please). 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shuoweil self-assigned this Jul 30, 2026

shuoweil requested review from a team as code owners July 30, 2026 21:06

shuoweil requested review from GarrettWu, sycai and tswast and removed request for a team July 30, 2026 21:06

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Comment thread packages/google-cloud-bigquery/google/cloud/bigquery/_versions_helpers.py Outdated

Comment thread packages/google-cloud-bigquery/google/cloud/bigquery/_versions_helpers.py Outdated

shuoweil marked this pull request as draft July 31, 2026 19:30

shuoweil removed request for GarrettWu, sycai and tswast July 31, 2026 19:31

shuoweil and others added 10 commits August 3, 2026 23:15

feat(bigquery): add pandas-gbq capability helper

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Update packages/google-cloud-bigquery/google/cloud/bigquery/_versions…

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…_helpers.py Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Update packages/google-cloud-bigquery/google/cloud/bigquery/_versions…

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…_helpers.py Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

style: fix line length in _versions_helpers.py

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fix(bigquery): harden test fixtures and credentials isolation

fd6bf9e

Update packages/google-cloud-bigquery/tests/unit/test_magics.py

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Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Update packages/google-cloud-bigquery/tests/unit/test_magics.py

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Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

test(bigquery): fix Python 3.8 context manager syntax in test_magics.py

d4ab2e8

feat(bigquery): align version helper with style guide

e6dd867

chore: remove unrelated test helper changes from PR 2

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shuoweil force-pushed the shuowei-gbq-version-helper branch from 1431979 to 8d6425a Compare August 3, 2026 23:29

shuoweil marked this pull request as ready for review August 4, 2026 00:13

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parthea assigned tswast and unassigned shuoweil Aug 4, 2026

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sycai mentioned this pull request Aug 4, 2026

feat: add user-agent delegation telemetry for pandas-gbq #17704

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parthea assigned shuoweil and unassigned tswast Aug 4, 2026

shuoweil added 2 commits August 4, 2026 23:25

Merge branch 'main' into shuowei-gbq-version-helper

ac507de

fix(bigquery): address review feedback on pandas-gbq version helper

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shuoweil requested a review from sycai August 5, 2026 00:42

sycai approved these changes Aug 5, 2026

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shuoweil enabled auto-merge (squash) August 5, 2026 01:01

shuoweil merged commit 2207ca6 into main Aug 5, 2026
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shuoweil deleted the shuowei-gbq-version-helper branch August 5, 2026 02:53

release-please Bot mentioned this pull request Aug 5, 2026

chore: release main #17832

Merged

		with mock.patch.dict(sys.modules, {"google.cloud.bigquery_storage": None}):
		with mock.patch.dict(cloud.__dict__):

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shuoweil commented Jul 30, 2026 •

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