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Fri Dec 9 20:32:16 CET 2011 · https://mail.python.org/pipermail/python-dev/2011-December/114857.html

On Fri, 09 Dec 2011 19:51:14 +0100
Victor Stinner <victor.stinner at haypocalc.com> wrote:
> On 09/12/2011 01:35, Antoine Pitrou wrote:
> > On Fri, 09 Dec 2011 00:16:02 +0100
> > victor.stinner<python-checkins at python.org>  wrote:
> >>
> >> +.. c:function:: PyObject* PyUnicode_Copy(PyObject *unicode)
> >> +
> >> +   Get a new copy of a Unicode object.
> >> +
> >> +   .. versionadded:: 3.3
> >
> > I'm not sure I understand. Why would you make a copy of an immutable
> > object?
> 
> PyUnicode_Copy() can be used to modify a string to create a new string 
> with the same length. It is used for example by str.upper(), 
> str.title(), ... (fixup()).

Then the doc should mention that the returned string can be modified.
Otherwise it's a bit obscure why the function exists.

Regards

Antoine.

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Showing content from https://mail.python.org/pipermail/python-dev/2011-December/114857.html below:

[Python-Dev] cpython: Document PyUnicode_Copy() and PyUnicode_EncodeCodePage()