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Unicode casefold support for python 2.

Project Description

py2casefold

Python 3 has str.casefold(). Python 2 doesn’t. py2casefold brings casefolding support to Python 2.

Installation

pip install py2casefold

Usage

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

Note that casefold does not normalize the string. Casefolding and normalization are different operations. For more info see http://www.w3.org/International/wiki/Case_folding, and http://www.w3.org/TR/charmod-norm/.

If you are looking for string similarity you will also probably want to consider one of the unicode normalization options (NFC, NFKC, NFD, NFKD) that are available with python’s built in unicodedata.normalize().

Speed

At the moment, this pure python casefold implementation is significantly (> 20X) slower than the optimized py3 C implementation. This can be improved later, but it is currently more than sufficient for basic case folding. As a rough estimate, case folding 100 characters clocks in at ~ 25us on an old developer laptop.

License

BSD and the Unicode license agreement. This module includes data from the Unicode consortium which should include the appropriate notice (see http://unicode.org/copyright.html).

See LICENSE file for details.

Release History

Release History

This version
History Node

0.2.1

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0.2.0

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0.1.4

History Node

0.1.3

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File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
py2casefold-0.2.1-py2-none-any.whl (19.5 kB) Copy SHA256 Checksum SHA256 py2 Wheel Oct 13, 2015
py2casefold-0.2.1.tar.gz (18.4 kB) Copy SHA256 Checksum SHA256 Source Oct 13, 2015

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