download-youtube-feed.py

#!/usr/bin/env python3
#
# Download the latest feeds using youtube-dl
#

import os
import subprocess
import feedparser

FEED = 'https://www.youtube.com/feeds/videos.xml?channel_id=UCzCWehBejA23yEz3zp7jlcg'
CONFIG = os.path.join(os.path.expanduser('~'), '.config', 'youtube-feed.conf')

def go():
    last_entry = None
    try:
        with open(CONFIG, 'r') as f:
            last_entry = f.read().strip()
    except IOError:
        pass

    download_list = []
    found = False
    most_recent = None
    
    d = feedparser.parse(FEED)
    for e in d.entries:
        if most_recent is None:
            most_recent = e.id
        
        if e.id == last_entry:
            found = True
            break
        else:
            download_list.append({'name': e.title, 'id': e.title, 'link': e.link, 'published': e.published})

    # start downloading
    for download in download_list:
        try:
            subprocess.run(['yt-dlp', '-f', '251', '-x', download['link'],
                            '--add-metadata',
                            '--metadata-from-title', '(?P<artist>.+?) - (?P<title>.+)',
                            '-o', '~/Music2/%(title)s.%(ext)s'], check = True)
        except subprocess.CalledProcessError as e:
            print('Error downloading', download['name'], ':', e)

    # save our state
    with open(CONFIG, 'w') as f:
        f.write(most_recent)

if __name__ == '__main__':
    go()