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bpo-20092. Use __index__ in constructors of int, float and complex. (GH-13108)

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Serhiy Storchaka 2019-06-02 00:05:48 +03:00 • committed by GitHub
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@ -2394,11 +2394,9 @@ left undefined.
functions). Presence of this method indicates that the numeric object is
an integer type. Must return an integer.
.. note::
In order to have a coherent integer type class, when :meth:`__index__` is
defined :meth:`__int__` should also be defined, and both should return
the same value.
If :meth:`__int__`, :meth:`__float__` and :meth:`__complex__` are not
defined then corresponding built-in functions :func:`int`, :func:`float`
and :func:`complex` fall back to :meth:`__index__`.
.. method:: object.__round__(self, [,ndigits])