How do I case fold a string in Python 2?

Python 3.3 adds the casefold method to the str type, but in 2.x I don't have anything. What's the best way to work around this?

How do you make a string case sensitive in python?

Approach No 1: Python String lower() Method The lower() method converts all the characters in a string to the lowercase, making it easier to compare two strings.

How do you avoid lowercase and uppercase in Python?

Class names and constants are written in uppercase. We can ignore case in Python using the . upper() and . lower() methods.

Check out py2casefold.

>>> from py2casefold import casefold
>>> print casefold(u"tschüß")
tschüss
>>> casefold(u"ΣίσυφοςﬁÆ") == casefold(u"ΣΊΣΥΦΟσFIæ") == u"σίσυφοσfiæ"
True

There is a thread here which covers some of the issues (but may not resolve all), you can judge whether it is suitable for what you need. If this is no good then there are some useful tips for implementing case folding on the W3C site here.