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Diffstat (limited to 'Doc/whatsnew')
| -rw-r--r-- | Doc/whatsnew/3.8.rst | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/Doc/whatsnew/3.8.rst b/Doc/whatsnew/3.8.rst index 68a4457..154fd66 100644 --- a/Doc/whatsnew/3.8.rst +++ b/Doc/whatsnew/3.8.rst @@ -458,6 +458,17 @@ Build and C API Changes (Contributed by Antoine Pitrou in :issue:`32430`.) +* Functions that convert Python number to C integer like + :c:func:`PyLong_AsLong` and argument parsing functions like + :c:func:`PyArg_ParseTuple` with integer converting format units like ``'i'`` + will now use the :meth:`~object.__index__` special method instead of + :meth:`~object.__int__`, if available. The deprecation warning will be + emitted for objects with the ``__int__()`` method but without the + ``__index__()`` method (like :class:`~decimal.Decimal` and + :class:`~fractions.Fraction`). :c:func:`PyNumber_Check` will now return + ``1`` for objects implementing ``__index__()``. + (Contributed by Serhiy Storchaka in :issue:`36048`.) + Deprecated ========== @@ -508,6 +519,15 @@ Deprecated * The :meth:`~threading.Thread.isAlive()` method of :class:`threading.Thread` has been deprecated. (Contributed by Dong-hee Na in :issue:`35283`.) +* Many builtin and extension functions that take integer arguments will + now emit a deprecation warning for :class:`~decimal.Decimal`\ s, + :class:`~fractions.Fraction`\ s and any other objects that can be converted + to integers only with a loss (e.g. that have the :meth:`~object.__int__` + method but do not have the :meth:`~object.__index__` method). In future + version they will be errors. + (Contributed by Serhiy Storchaka in :issue:`36048`.) + + API and Feature Removals ======================== |