Newgrounds Music Downloader

ng_downloader.py

import os
import sys
import requests


def parse_song(song_id: int) -> bytes:
    url = f'https://www.newgrounds.com/audio/listen/{song_id}'
    resp = requests.get(url)
    cur_line = ''
    for line in resp.text.split('\n'):
        if not 'var embed_controller = new embedController'.lower() in line.lower():
            continue
        cur_line = line.strip()
    if not cur_line:
        return None
    mp3_url = cur_line.split('"')[3].replace('\\/', '/').split('?')[0]
    print(f'Info: Downloading "{mp3_url}"...')
    mp3_resp = requests.get(mp3_url)
    return mp3_resp.content
    

def main() -> None:
    if len(sys.argv) <= 1:
        print(f'Usage: "{sys.executable}" "{__file__}" "id"')
        sys.exit(0)
    song_id = int(sys.argv[1])
    result = parse_song(song_id)
    if not result:
        print('Error: Can\'t download the song')
        sys.exit(0)
    f = open(f'{song_id}.mp3', 'wb')
    f.write(result)
    f.close()
    print(f'Info: OK!')


if __name__ == '__main__':
    main()