How to parse a flat file (in python) with FIX message format?

Does anyone know what is the best way to parse a 4.4 FIX protocol file in python?

I have come across a module , but cannot find information on how to use this module for flat file and not for live streaming messages. quickfix44

Any other utility already available in python that can do this read from a FIX-Protocol file that also handles duplicate groups automatically?

Thank.