Shuffle an m3u playlist`

shuffle_playlist.py

#!/bin/env python
import sys
import random
if __name__ == '__main__':
    old_indices = []
    new_indices = []
    with open(sys.argv[1]) as f:
        pl = f.read().split("\n")
    desired = []
    for i in range(1, len(pl[1:]), 2)
        desired.append("{}\n{}".format(pl[i], pl[i+1]))
    random.shuffle(desired)
    split_desired = []
    for foo in desired:
        split_desired.extend(foo.split("\n"))
    new_list = "\n".join([pl[0]] + split_desired)
    with open(sys.argv[2], "w") as f:
        f.write(new_list)