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gh-131885: Clarify lazy import filters have positional-only parameters #144856

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gh-131885: Clarify lazy import filters have positional-only parameters #144856

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f869e9c
Clarify lazy import filters have positional-only arguments
johnslavik Feb 15, 2026
4eebd62
Don't describe arguments as positional in written sentences
johnslavik Feb 16, 2026
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4 changes: 3 additions & 1 deletion Doc/library/sys.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -1783,7 +1783,7 @@ always available. Unless explicitly noted otherwise, all variables are read-only
signature::

def filter(importing_module: str, imported_module: str,
fromlist: tuple[str, ...] | None) -> bool
fromlist: tuple[str, ...] | None, /) -> bool

Where:

Expand All @@ -1792,6 +1792,8 @@ always available. Unless explicitly noted otherwise, all variables are read-only
* *fromlist* is the tuple of names being imported (for ``from ... import``
statements), or ``None`` for regular imports

and all of them are positional arguments.
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The filter should return ``True`` to allow the import to be lazy, or
``False`` to force an eager import.

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