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gh-142093: clarify which variables appear in function.__closure__ #142086

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doc: clarify which variables appear in function.__closure__
Vemulakonda559 Nov 29, 2025
a97014d
doc: adjust wording in function.__closure__ clarification
Vemulakonda559 Nov 29, 2025
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7 changes: 7 additions & 0 deletions Doc/reference/datamodel.rst
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Expand Up @@ -569,6 +569,13 @@ Special read-only attributes
A cell object has the attribute ``cell_contents``.
This can be used to get the value of the cell, as well as set the value.

Only names that are actually referenced in the function body are
listed in :attr:`~codeobject.co_freevars` and therefore have
entries in ``function.__closure__``. Variables defined in an
enclosing scope but never referenced inside the function do not
appear in the closure.


Special writable attributes
~~~~~~~~~~~~~~~~~~~~~~~~~~~

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