deps!: Remove support for Python 3.8 #932
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This commit removes Python 3.8 from the supported versions. Updates include changes in noxfiles, GitHub workflows, setup.py, Kokoro configurations, and documentation to reflect Python 3.9 as the minimum supported version.
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This commit addresses items missed in the initial Python 3.8 removal: * Adds `kokoro/presubmit/system-3.9.cfg`. * Updates example commands in `CONTRIBUTING.rst`. * Modifies the warning in `pandas_gbq/__init__.py` for Python < 3.9. * Updates Python versions in `owlbot.py`. * Removes 3.8-specific line from `samples/snippets/requirements.txt`. * Populates `testing/constraints-3.9.txt` with correct lower bounds.
chalmerlowe
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Jun 24, 2025
chalmerlowe
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chalmerlowe
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Linchin
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Jun 24, 2025
chelsea-lin
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| @@ -11,14 +11,14 @@ | |||
| from .gbq import read_gbq, to_gbq # noqa | |||
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| sys_major, sys_minor, sys_micro = _versions_helpers.extract_runtime_version() | |||
| if sys_major == 3 and sys_minor in (7, 8): | |||
| if sys_major == 3 and sys_minor < 9: | |||
| warnings.warn( | |||
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From the Python docs: FutureWarning: Base category for warnings about deprecated features when those warnings are intended for end users of applications that are written in Python.
I suspect for a small window of time this library will likely still run under 3.7 or 3.8. At some point we will introduce a 3.9+ only feature and then things will get hairy.
For now, the use of a FutureWarning (which end users will see under the default settings of the warnings module) seems like a slightly less jarring way to migrate end users toward running 3.9.
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This commit removes Python 3.8 from the supported versions. Updates include changes in noxfiles, GitHub workflows, setup.py, Kokoro configurations, and documentation to reflect Python 3.9 as the minimum supported version.