m3u playlist generator to help with retroarch emulator setup and multiple disks

make_m3u.py

#!/usr/bin/python
"""This script will create an m3u file with a tracklist of each .cue or .ccd 
found in a subdirectory, then name the m3u after the subdirectory. This helps 
with multiple disks for emulation.

"""

import os
import os.path

EXT = ['.cue', '.ccd']

cwd = os.getcwd()
dirs = os.listdir(cwd)

for d in dirs:
    contents = os.listdir(os.path.join(cwd, d))
    disks = [
        os.path.join(d, f) for f in os.listdir(os.path.join(cwd, d)) 
        if os.path.splitext(f)[-1] in EXT
    ]
    if disks:
        with open(os.path.join(cwd, '{d}.m3u'.format(d=d)), 'wb') as m3u:
            m3u.writelines(['{disk}\n'.format(disk=disk) for disk in disks])