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gh-77753: Add example for values that compare equal in stdtypes (#98497)

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Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
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Stanley 2022-10-25 19:54:27 -07:00 • committed by GitHub
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@ -4370,11 +4370,9 @@ type, the :dfn:`dictionary`. (For other containers see the built-in
A dictionary's keys are *almost* arbitrary values. Values that are not A dictionary's keys are *almost* arbitrary values. Values that are not
:term:`hashable`, that is, values containing lists, dictionaries or other :term:`hashable`, that is, values containing lists, dictionaries or other
mutable types (that are compared by value rather than by object identity) may mutable types (that are compared by value rather than by object identity) may
not be used as keys. Numeric types used for keys obey the normal rules for not be used as keys.
numeric comparison: if two numbers compare equal (such as ``1`` and ``1.0``) Values that compare equal (such as ``1``, ``1.0``, and ``True``)
then they can be used interchangeably to index the same dictionary entry. (Note can be used interchangeably to index the same dictionary entry.
however, that since computers store floating-point numbers as approximations it
is usually unwise to use them as dictionary keys.)
.. class:: dict(**kwargs) .. class:: dict(**kwargs)
dict(mapping, **kwargs) dict(mapping, **kwargs)