>>> import calendar
>>> calendar.LocaleTextCalendar(locale='fr_FR').formatmonthname(2010,10,10)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\Python27\lib\calendar.py", line 522, in formatmonthname
with TimeEncoding(self.locale) as encoding:
File "C:\Python27\lib\calendar.py", line 490, in __enter__
_locale.setlocale(_locale.LC_TIME, self.locale)
File "C:\Python27\lib\locale.py", line 531, in setlocale
return _setlocale(category, locale)
locale.Error: unsupported locale setting