Python extension for computing string edit distances and similarities.
The Levenshtein Python C extension module contains functions for fast computation of
Levenshtein (edit) distance, and edit operations
approximate median strings, and generally string averaging
string sequence and set similarity
It supports both normal and Unicode strings.
Python 2.2 or newer is required; Python 3 is supported.
StringMatcher.py is an example SequenceMatcher-like class built on the top of Levenshtein. It misses some SequenceMatcher’s functionality, and has some extra OTOH.
Levenshtein.c can be used as a pure C library, too. You only have to define NO_PYTHON preprocessor symbol (-DNO_PYTHON) when compiling it. The functionality is similar to that of the Python extension. No separate docs are provided yet, RTFS. But they are not interchangeable:
C functions exported when compiling with -DNO_PYTHON (see Levenshtein.h) are not exported when compiling as a Python extension (and vice versa)
Unicode character type used with -DNO_PYTHON is wchar_t, Python extension uses Py_UNICODE, they may be the same but don’t count on it
gendoc.sh generates HTML API documentation, you probably want a selfcontained instead of includable version, so run in ./gendoc.sh --selfcontained. It needs Levenshtein already installed and genextdoc.py.
Levenshtein can be copied and/or modified under the terms of GNU General Public License, see the file COPYING for full license text.
This package was long missing from PyPi and available as source checkout only. We needed to restore this package for Go Mobile for Plone and Pywurfl projects which depend on this.
Fixed a bug in setup.py: installation would fail on Python 3 if the locale did not specify UTF-8 charset (Felix Yan).
Added COPYING, StringMatcher.py, gendoc.sh and NEWS in MANIFEST.in, as they were missing from source distributions.
Added Levenshtein.h to MANIFEST.in
Python 3 support, maintainership passed to Antti Haapala
0.10.1 - 0.10.2
Made python-Lehvenstein Git compatible and use setuptools for PyPi upload
Created HISTORY.txt and made README reST compatible
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