cdifflib

cdifflib is a Python library that provides a C implementation of parts of Python's standard `difflib` module, specifically focusing on `SequenceMatcher`. It creates a `CSequenceMatcher` type which inherits most functions from `difflib.SequenceMatcher`, offering up to 4x speed improvement when diffing large streams. The current version is 1.2.9, with irregular but ongoing maintenance releases to support newer Python versions and address issues.