Am 09.12.2011 20:32, schrieb Antoine Pitrou: > On Fri, 09 Dec 2011 19:51:14 +0100 > Victor Stinner <victor.stin...@haypocalc.com> wrote: >> On 09/12/2011 01:35, Antoine Pitrou wrote: >>> On Fri, 09 Dec 2011 00:16:02 +0100 >>> victor.stinner<python-check...@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.
I'm skeptical about this modification part. If you make a copy, it's not clear at all that the new characters that you put in will fit in range with the width of the unicode string. Even decreasing the ordinal of a character may be incorrect as the result may not be canonical anymore. Regards, Martin _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
