Improved Google Music duplicate deletion script

delete_gmusic_dupes.py

#!/usr/bin/env python

# created by shuichinet https://gist.github.com/shuichinet
# forked from https://gist.github.com/shuichinet/8159878 21 Nov 2015
# using minor edits by fcrimins https://www.reddit.com/user/fcrimins
# from https://www.reddit.com/r/google/comments/2xzgyv/remove_duplicate_songs_from_google_play_music/csh6mrh
# also using clever edits by Morgan Gothard https://medium.com/@mgothard
# updated for Python 3.5 by John M. Kuchta https://medium.com/@sebvance 22 Nov 2016 (hey I was busy)
# compiled by John M. Kuchta https://medium.com/@sebvance
# thanks to shuichinet, fcrimins and Mr. Gothard for their work

from gmusicapi import Mobileclient
from getpass import getpass

client = Mobileclient()
logged_in = client.login(input('Username: '), getpass(), Mobileclient.FROM_MAC_ADDRESS)

while logged_in:
	print('Getting all songs ...')
	all_songs = client.get_all_songs()
	new_songs = {}
	old_songs = {}

	for song in all_songs:
		song_id = song.get('id')
		song_artist = song.get('artist')
		song_album = song.get('album')
		song_title = song.get('title')
		timestamp = song.get('recentTimestamp')
		discnum = 0 if not song.get('discNumber') else song.get('discNumber')
		tracknum = 0 if not song.get('trackNumber') else song.get('trackNumber')
		discnum = 0 if not song.get('discNumber') else song.get('discNumber')
		key = f'{song_artist}:{song_album}; {discnum}-{tracknum:02d} {song_title}'
		if key in new_songs:
			if new_songs[key]['timestamp'] < timestamp:
				old_songs[key] = new_songs[key]
				new_songs[key] = {'id': song_id, 'timestamp': timestamp}
			else:
				old_songs[key] = {'id': song_id, 'timestamp': timestamp}
		
		new_songs[key] = {'id': song_id, 'timestamp': timestamp}

	if len(old_songs):
		print('Duplicate songs')
		
		old_song_ids = []
		
		for key in sorted(old_songs.keys()):
			old_song_ids.append(old_songs[key]['id'])
			print('	   ' + str(key.encode('utf-8')))
		
		if input('Delete duplicate songs? (y, n): ') is 'y':
			print('Deleting songs ...')
			client.delete_songs(old_song_ids)
	else:
		print('Finally. No duplicate songs.')
		logged_in = False