``Python.h`` no longer includes the ``<ctype.h>`` standard header file. If

needed, it should now be included explicitly. For example, it provides

``isalpha()`` and ``tolower()`` functions which are locale dependent. Python

provides locale independent functions, like:c:func:`Py_ISALPHA` and

:c:func:`Py_TOLOWER`. Patch by Victor Stinner.

provides locale independent functions, like:c:func:`!Py_ISALPHA` and

:c:func:`!Py_TOLOWER`. Patch by Victor Stinner.