chore(python): Add support for Python 3.14#804
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This PR adds support for Python 3.14 to the library.
Key changes include:
setup.pyto include the Python 3.14 classifier.noxfile.py:UNIT_TEST_PYTHON_VERSIONS,SYSTEM_TEST_PYTHON_VERSIONS).DEFAULT_PYTHON_VERSIONandDEFAULT_PYTHON_VERSION_FOR_SQLALCHEMY_20to"3.14".
BLACK_VERSIONto23.7.0for Python 3.14 compatibility..github/workflows/test_suite.ymlto use appropriate Python versions for each job including matrix strategies forunitandsystemjobs.NOTE: The following CI/CD check is failing:
SQLAlchemy Spanner dialect / compliance_tests_20Per Gemini: The
compliance_test_20session in Nox is currently failing on Python 3.13 and 3.14 due to issues with schema reflection for elements with quoted names or mixed case. These appear to pre-existing issues with the dialect's handling of such identifiers, rather than a regressio introduced by Python 3.14.The failing compliance test has been marked as not required so as to not be a blocker for this PR. As noted in the issue that status should be reverted when the issue is resolved.
Further details and investigation are tracked in Issue #805.