Takes the output of running pngnq on a file and returns it to its original filename.

gistfile1.py

#!/usr/bin/python
# Filename: denq.py
from os import path
import shutil
import sys


def main():
        if sys.argv:
                base     = sys.argv[1] #get the filename from shell
                fullpath = path.split(base)
                filename = fullpath[1].split('-')[0] #pngng creates files with -nq before the .png
                #now move the quantized photo to replace the existing photo
                shutil.move(base,fullpath[0]+'/'+filename+".png")
        else:
                print "No file supplied, quitting"

if __name__ == "__main__":
        main()