Python get MD5 of file

get_md5.py

#!/usr/bin/env python

import hashlib
import os
import sys


def md5(path_file):
	checksum = hashlib.md5()
	
	fd = open(path_file, "r")	
	while True:
		## Don't read the entire file at once...
		data = fd.read(4096)
		if len(data) == 0:
			break
		checksum.update(data)
	
	return checksum.hexdigest()


def main(args):
	for arg in args[1:]:
		if os.path.isfile(arg):
			print("{}: {}".format(arg, md5(arg)))


if __name__ == "__main__":
	main(sys.argv)