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A Python3 Levenshtein distance (re)implementation of pylev

Project description

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A Python3 Levenshtein distance (re)implementation of pylev.

Calculation of Levenshtein distance between strings. Based on the Wikipedia code samples.

What’s new?

Requirements

  • Python Python 3.3+ or PyPy3

Installation

pip install pylev3

Usage

Usage is fairly straightforward:

from pylev3 import Levenshtein
assert Levenshtein.classic('', 'cat'), 3
assert Levenshtein.damerau('cat', 'cat'), 0
assert Levenshtein.wf('kitten', 'sitting'), 3
assert Levenshtein.wfi(['cat', 'kitten'], 'abc'), [3, 6]
assert Levenshtein()(['cat', 'kitten'], ['cat', 'abc']), [[0, 3], [5, 6]]

Or use old way (like in pylev):

from pylev3 import wf_levenshtein, wfi_levenshtein, damerau_levenshtein, classic_levenshtein
assert classic_levenshtein('', 'cat'), 3
assert damerau_levenshtein('cat', 'cat'), 0
assert wf_levenshtein('kitten', 'sitting'), 3
assert wfi_levenshtein(['cat', 'kitten'], 'abc'), [3, 6]
assert wf_levenshtein(['cat', 'kitten'], ['cat', 'abc']), [[0, 3], [5, 6]]

License

New BSD (as authored).

Tests

# get
$ git clone https://github.com/hell03end/pylev3.git
$ cd pylev3
# run
$ python -m unittest tests

Project details


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