Pynini

Pynini is a Python library providing efficient Python bindings for the OpenFst C++ library, enabling the construction, manipulation, and compilation of finite-state transducers (FSTs) and finite-state acceptors (FSAs). It's widely used for tasks in natural language processing (NLP) such as text normalization, phonology, and speech recognition. The current version is 2.1.7, with active development and regular releases.