On behalf of this thread;

http://mail.python.org/pipermail/python-dev/2005-April/052968.html

As described in
http://www.i18nguy.com/unicode/turkish-i18n.html [ How
Applications Fail With Turkish Language
] , Turkish has 4 "i" in their alphabet. 

Without --with-wctype-functions support Python convert
these characters locare-independent manner in
tr_TR.UTF-8 locale. So all conversitons maps to "i" or
"I" which is wrong in Turkish locale. 

So if Python Developers will remove the wctype
functions from Python, then there must be a
locale-dependent upper/lower funtion to handle these
characters properly.