Yes, I know this issue is closed but I wonder how could your Python
interpreter not error on
>>> calendar.LocaleTextCalendar(locale='fr_FR').formatmonthname(2010,10,10)

Please retry executing the above line of code in Python 2.7.1 interpreter
and tell me if you get an error. I get this:
>>> 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