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gh-155354: Document that sys no longer clears the type cache by fedonman · Pull Request #155391 · python/cpython · GitHub

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gh-155354: Document that sys no longer clears the type cache #155391

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kumaraditya303 merged 2 commits into from
Aug 21, 2026
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gh-155354: Document that sys no longer clears the type cache #155391

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gh-155354: Document that sys no longer clears the type cache
fedonman Aug 8, 2026
02d530c
Address review: state the no-op directly and pin the version to 3.16
fedonman Aug 16, 2026
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13 changes: 8 additions & 5 deletions Doc/library/sys.rst
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Expand Up @@ -233,15 +233,15 @@ always available. Unless explicitly noted otherwise, all variables are read-only

.. function:: _clear_type_cache()

Clear the internal type cache. The type cache is used to speed up attribute
and method lookups. Use the function *only* to drop unnecessary references
during reference leak debugging.

This function should be used for internal and specialized purposes only.
This function is a no-op. It used to clear the internal type cache, which
is now implemented per-type.

.. deprecated:: 3.13
Use the more general :func:`_clear_internal_caches` function instead.

.. versionchanged:: 3.16
This function is now a no-op.


.. function:: _clear_internal_caches()

Expand All @@ -250,6 +250,9 @@ always available. Unless explicitly noted otherwise, all variables are read-only

.. versionadded:: 3.13

.. versionchanged:: 3.16
The type cache is no longer cleared, as it is now implemented per-type.


.. function:: _current_frames()

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