[importlib] Deprecate debug_override parameter in cache_from_source #15225

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JelleZijlstra merged 1 commit into python:main from donbarbos:deprecate-importlib-debug_override

Jan 8, 2026

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donbarbos commented Jan 6, 2026

Docs: https://docs.python.org/3.14/library/importlib.html#importlib.util.cache_from_source
Source: https://github.com/python/cpython/blob/9f91278412e30ca3daaa427614176b2891bd230a/Lib/importlib/_bootstrap_external.py#L239


          [importlib] Deprecate debug_override parameter in cache_from_source

3aeeeba

Docs: https://docs.python.org/3.14/library/importlib.html#importlib.util.cache_from_source
Source: https://github.com/python/cpython/blob/9f91278412e30ca3daaa427614176b2891bd230a/Lib/importlib/_bootstrap_external.py#L239

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github-actions bot commented Jan 6, 2026

According to mypy_primer, this change has no effect on the checked open source code. 🤖🎉

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donbarbos commented Jan 6, 2026

I also like that this change reflects the impossibility of passing both not None debug_override and optimization arguments at the same time

JelleZijlstra merged commit 645c7d2 into python:main

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