george_harrison_download.py

import multiprocessing
import os
import requests

BASE_URL = 'http://www.bigozine2.com/{folder}/GHlondon/GHlondon{song_id}.mp3'

SONGS = {
  110: 'I Want To Tell You',
  111: 'Old Brown Shoe',
  112: 'Taxman',
  113: 'Introduction',
  114: 'Give Me Love',
  115: 'Something',

  201: 'What Is Life',
  202: 'Piggies',
  203: 'Got My Mind Set On You',
  204: 'Cloud 9',
  205: 'Here Comes The Sun',
  206: 'My Sweet Lord',
  207: 'All Those Years Ago',
  208: 'Cheer Down',
  209: 'Isn’t It A Pity',
  210: 'Devil’s Radio',
  211: 'While My Guitar Gently Weeps',
  212: 'Roll Over Beethoven',
  213: 'Drum Solo',
  214: 'Roll Over Beethoven',
}

FOLDERS = {
  1: 'TRKS',
  2: 'TRKSB1'
}

def download_song(song_item):

  song_id, song_name = song_item
  print('Downloading {song_name}...'.format(song_name=song_name))

  folder_idx = song_id // 100
  folder = FOLDERS.get(folder_idx)

  song_url = BASE_URL.format(folder=folder, song_id=song_id)
  song_iter = requests.get(song_url, stream=True)

  song_file_name = '{song_name}.mp3'.format(song_name=song_name)
  song_path = os.path.join(song_file_name)
  with open(song_path, 'wb') as f:
    for block in song_iter:
      f.write(block)

def main():
  pool_size = 2 * multiprocessing.cpu_count()
  pool = multiprocessing.Pool(pool_size)
  items = SONGS.items()
  pool.map(download_song, items)


if __name__ == '__main__':
  main()