shrink file names

#! /usr/bin/env python

import os
SIZE = 32

def main():
    """ Main function, all the work goes here. """
    cnt = 0
    for name in os.listdir(os.getcwd()):
        cnt += 1
        pnt = name.rfind(".")
        ext = name[pnt:]
        new = name[:min(pnt, SIZE)]
        os.rename(name, str(cnt) + new.strip() + ext)

if __name__ == "__main__":
    main()