numerical representation of differences between strings


A small Python module providing edit distance (aka Levenshtein distance, that is, counting insertions, deletions and substitutions) and Hamming distance computation.

Its main purpose is to speed up computation of edit distance by allowing to specify a maximum number of differences maxdiff (banding). If that parameter is provided, the returned edit distance is anly accurate up to maxdiff. That is, if the actual edit distance is higher than maxdiff, a value larger than maxdiff is returned, but not necessarily the actual edit distance.

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