User:Tomwm/Lowercase extensions

#!/usr/bin/python

import os
import sys
from hashlib import md5

for fn in sys.argv[1:]:
	try:
		dot = fn.rindex('.')
		fn_lc = fn[:dot] + fn[dot:].lower()
	except (ValueError, IndexError):
		fn_lc = None
	
	if fn_lc is not None:
		os.rename(fn, fn_lc)