python-crfsuite
https://pypi.org/project/python-crfsuite/
ドキュメント
https://python-crfsuite.readthedocs.io/en/latest/
ソースコード
https://github.com/scrapinghub/python-crfsuite
example
Let's use CoNLL 2002 data to build a NER system (python-crfsuite)