Easiparse is a project mainly written in Python, based on the GPL-3.0 license.
python + mongodb flat text files importer
Parsing and importing to mongodb any flat text file following a flexible configuration. A flat text file is for example MEDLINE format from pubmed.gov :
PMID- 19712554 OWN - NLM STAT- MEDLINE DA - 20090828 DCOM- 20091109 IS - 1472-6491 (Electronic) ...