add_meta_to_filename("03302017.NASDAQ_ITCH50", "2010-12-24", "TEST")
add_meta_to_filename("20170130.BX_ITCH_50.gz", "2010-12-24", "TEST")
add_meta_to_filename("S030220-v50-bx.txt.gz", "2010-12-24", "TEST")
add_meta_to_filename("unknown_file.ITCH_50", "2010-12-24", "TEST")
Run the code above in your browser using DataLab