Download Youtube audio as mp3 in a specific directory within artist subfolder (if possible)

ymp3.py

__author__ = 'EdgarT'
from __future__ import unicode_literals
import youtube_dl
import sys



class MyLogger(object):
    def debug(self, msg):
        print(msg)

    def warning(self, msg):
        print(msg)

    def error(self, msg):
        print(msg)


def my_hook(d):
    if d['status'] == 'finished':
        print('Descarga termindada, convirtiendo a mp3...')


def main():
    url = ''
    BASE_DIR = 'A:\\Music\\'
    if len(sys.argv)> 1:
        url= sys.argv[1]
    else:        
        print('Especifica una URL de un video de Youtube')
        sys.exit(1)
        
    ydl_opts = {
        'outtmpl' : BASE_DIR + '%(title)s.%(ext)s',
        'writethumbnail': True,
        'format': 'bestaudio/best',
        'postprocessors': [{
            'key': 'FFmpegExtractAudio',
            'preferredcodec': 'mp3',
            'preferredquality': '192',
        },        
        {
            'key': 'EmbedThumbnail',            
        },
        {
            'key': 'MetadataFromTitle',
            'titleformat' : '%(artist)s - %(title)s'
        },
        {
            'key': 'FFmpegMetadata',
        },
        
        ],
        'logger': MyLogger(),
        'progress_hooks': [my_hook],
    }
    
    
    info = {}
    with youtube_dl.YoutubeDL(ydl_opts) as ydl:
        info = ydl.extract_info(url, download=False)

    artist = None
    
    artist = info.get('title').split('-',1)[0].strip()
    if artist is not None:
        ydl_opts['outtmpl'] = BASE_DIR + artist + '\\%(title)s.%(ext)s'
    
    with youtube_dl.YoutubeDL(ydl_opts) as ydl:
        ydl.download([url])
    
    print(info.get('title'))
        
        
        
if __name__ == "__main__":
    main()