chore: drop Python 3.9 support for running aws-lambda-builders#847
Merged
valerena merged 3 commits intoaws:developfrom Mar 18, 2026
Merged
chore: drop Python 3.9 support for running aws-lambda-builders#847valerena merged 3 commits intoaws:developfrom
valerena merged 3 commits intoaws:developfrom
Conversation
- Update python_requires to >=3.10 - Remove Python 3.8 and 3.9 classifiers from setup.py - Remove 3.9 from CI test matrices (unit-functional, python-pip, python-uv) - Update black target_version to py310-py314 - Simplify requirements/dev.txt version conditionals Note: Building Lambda functions targeting the python3.9 runtime is still fully supported. This change only affects the minimum Python version required to run aws-lambda-builders itself.
seshubaws
reviewed
Mar 17, 2026
valerena
approved these changes
Mar 17, 2026
seshubaws
approved these changes
Mar 17, 2026
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Summary
Drop Python 3.9 as a supported version for running aws-lambda-builders. The minimum Python version is now 3.10. CI test matrices now cover Python 3.10 through 3.14.
What changed
setup.py:python_requiresbumped to>=3.10, removed 3.8/3.9 classifiers.github/workflows/build.yml: removed3.9from unit-functional, python-pip-integration, and python-uv-integration matricespyproject.toml: updated blacktarget_versiontopy310–py314requirements/dev.txt: simplified version-conditional pins that only existed for <3.10 compatWhat did NOT change
Building Lambda functions targeting the
python3.9runtime is still fully supported. Thepython3.9entry insupported_runtimes.pyand all related Lambda workflow code remains untouched. This change only affects the minimum Python version required to run aws-lambda-builders itself.