Ignore case in Python strings [duplicate]

Answer 1

When something isn't supported well in the standard library, I always look for a PyPI package. With virtualization and the ubiquity of modern Linux distributions, I no longer avoid Python extensions. PyICU seems to fit the bill: https://stackoverflow.com/a/1098160/3461

There now is also an option that is pure python. It's well tested: https://github.com/jtauber/pyuca

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Old answer:

I like the regular expression solution. Here's a function you can copy and paste into any function, thanks to python's block structure support.

def equals_ignore_case(str1, str2):
    import re
    return re.match(re.escape(str1) + r'\Z', str2, re.I) is not None

Since I used match instead of search, I didn't need to add a caret (^) to the regular expression.

Note: This only checks equality, which is sometimes what is needed. I also wouldn't go so far as to say that I like it.