Cut commercials from recorded TV shows

from os import listdir
from os.path import isfile, isdir, join, splitext
import subprocess

mypath="/home/tausciam/MyCloud/Public/TVShows"

def alreadydone(fp):
    extless,ext = splitext(fp)
    if extless.endswith("[CUT]"):
        return True
    else:
        myextless = extless + "[CUT]"
        newname = myextless + ext
        if newname in listdir(mynewpath):
            return True
    return False

onlydirs=[]
for each in listdir(mypath):
    if isdir(join(mypath,each)):
        onlydirs.append(each)

for show in onlydirs:
    mynewpath=join(mypath,show)
    for episode in listdir(mynewpath):
        if not alreadydone(episode):
            root,ext = splitext(join(mynewpath,episode))
            cutname=root + "[CUT]" + ext
            args=["comcut",join(mynewpath,episode),cutname]
            subprocess.call(args)