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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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15 changed files with 181 additions and 23 deletions
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8
Doc/c-api/complex.rst
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@ -129,4 +129,10 @@ Complex Numbers as Python Objects
If *op* is not a Python complex number object but has a :meth:`__complex__`
method, this method will first be called to convert *op* to a Python complex
number object. Upon failure, this method returns ``-1.0`` as a real value.
number object. If ``__complex__()`` is not defined then it falls back to
:meth:`__float__`. If ``__float__()`` is not defined then it falls back
to :meth:`__index__`. Upon failure, this method returns ``-1.0`` as a real
value.
.. versionchanged:: 3.8
Use :meth:`__index__` if available.

4
Doc/c-api/float.rst
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@ -47,9 +47,13 @@ Floating Point Objects
Return a C :c:type:`double` representation of the contents of *pyfloat*. If
*pyfloat* is not a Python floating point object but has a :meth:`__float__`
method, this method will first be called to convert *pyfloat* into a float.
If ``__float__()`` is not defined then it falls back to :meth:`__index__`.
This method returns ``-1.0`` upon failure, so one should call
:c:func:`PyErr_Occurred` to check for errors.
.. versionchanged:: 3.8
Use :meth:`__index__` if available.
.. c:function:: double PyFloat_AS_DOUBLE(PyObject *pyfloat)