[iennae]

…Cloud Bigtable data as an external table

Problem:
The BigQuery documentation (https://cloud.google.com/bigquery/docs/external-data-bigtable) needs a standalone, tested Python code sample demonstrating how to query Cloud Bigtable data as an external table (region tag bigquery_query_external_bigtable).

Solution:

• Add query_external_bigtable(project_id: str, bigtable_instance_id: str, bigtable_table_id: str) -> None in bigquery/biglake/bigquery_query_external_bigtable.py (Configure a temporary Cloud Bigtable external table mapping column families and qualifiers and query it from BigQuery.)
• Add unit tests (bigquery/biglake/bigquery_query_external_bigtable_test.py) covering both the success path and API error handling (GoogleAPICallError)

Description

Fixes #

Checklist

Testing

• I have tested this change on a live environment and verified it works as intended.

Compliance & Style

• I have followed the Sample Guidelines.
• The README is updated with all relevant information (if applicable).
• If this PR adds a new sample directory: I updated the CODEOWNERS file.

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Post-Approval Actions

• Please merge this PR for me once it is approved

[snippet-bot]

Here is the summary of changes.

You are about to add 1 region tag.

• bigquery/biglake/bigquery_query_external_bigtable.py:15, tag bigquery_query_external_bigtable

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[gemini-code-assist]

Code Review

This pull request introduces a new Python sample and corresponding unit tests for configuring and querying a temporary BigQuery external table backed by Cloud Bigtable. Feedback on the changes suggests updating the noxfile_config.py to remove Python 3.10 from the ignored_versions list, ensuring that the oldest supported Python version is properly tested in accordance with repository guidelines.

[gemini-code-assist]

According to the repository's general rules, we should only test the oldest and newest supported Python releases in test configurations (such as noxfile_config.py), ignoring intermediate versions. Since requirements-test.txt specifies python_version >= "3.10", Python 3.10 is the oldest supported version and should be tested. Therefore, "3.10" should be removed from ignored_versions so that it is included in the test runs, while intermediate versions like "3.11" remain ignored.

Suggested change

	"ignored_versions": ["2.7", "3.7", "3.8", "3.9", "3.10", "3.11"],
	"ignored_versions": ["2.7", "3.7", "3.8", "3.9", "3.11"],

References

1. Only test the oldest and newest supported Python releases in test configurations (such as noxfile_config.py), ignoring intermediate versions.

[amcolin]

LGTM