It's just a small module in C for Python.
The module implements Knuth-Morris-Pratt algorithm for string matching.
The example of using:
>> import knuth_morris_pratt_algorithm
>> knuth_morris_pratt_algorithm.match_string('abc', 'abcabc')
(0, 3)
where abc is a pattern, abcabc is a text, and result is a tuple of positions where the pattern matched the text.