Morfologik is Polish morphological analyzer. For more information see http://github.com/morfologik/morfologik-stemming/ and http://http://www.morfologik.blogspot.com/
This binding works only with Python 3.
Install it from pip:
> pip install pyMorfologik
Now, only simple stems are supported:
>>> from pymorfologik import Morfologik
>>> Morfologik().get_simple_stem(['tañczy³em', 'gra'])
{'gra': ['gra', 'graæ'], 'tañczy³em': ['tañczyæ']}