Poorly organized script to make a list of songs from the contents of music folder

import os

debug = False
format = 1 #or 2

def main():
    extlist = (".mp3",".m4a",".wav", ".ogg")
    if debug:
        index = [('/media/user/D/Commmon/Music/ZZ Top', [], ['Sharp Dressed Man.mp3', 'FakeSong - ZZ Top.ogg', '015 - Yeetus.mp3'])]
    else:
        index = list(os.walk("/media/user/D/Common/Music/"))# Grab list of artists and folders
    file = open("songslist.txt", "w")
    for entry in index:
        artist = entry[0].split("/")[-1]
        out = []
        for i in entry[2]: #for each filename in artist folder
            if i.endswith(extlist):
                name = i
                tmp = i.split(" -!- ")[0].split(".")
                if len(tmp) > 1:tmp.pop()
                name = "".join(tmp)
                try:
                    isdash = name.index(" - ")
                except ValueError:
                    isdash = -1
                if isdash != -1:
                    name = name.split(" - ")
                    if artist.lower() in name[0].lower(): choice = 1
                    elif artist.lower() in name[1].lower(): choice = 0
                    else: choice = -1
                    if choice == -1: out.append(" - ".join(name))
                    if not choice == -1: out.append(name[choice])
                else:
                    out.append(name)
        newlinetab = "\n    "
        if len(out) > 0:
            print(f"{artist}\n    {newlinetab.join(out)}")
            file.write(f" -!- {artist}\n".join(out))
    file.close()

if __name__ == "__main__":
    main()
    exit()


        # file = open("songslist.txt", "w")
        # for name in songnames:
        #     file.write(f"\"{name}\" -!- {artist}")
        # file.close()