Lists video page links of a YouTube playlist

youtube-playlist-links.py

#!/usr/bin/env python3
import requests
import json
import sys
import os


GDATA_URL="https://gdata.youtube.com/feeds/api/playlists/{playlist_id}/?alt=json&v=2&max-results=50"


def get_playlist_links(playlist_id):
    next_feed_page = GDATA_URL.format(playlist_id=playlist_id)
    
    while next_feed_page is not None:
        r = requests.get(next_feed_page)
        gdata = json.loads(r.text)
    
        for playlist_entry in gdata['feed']['entry']:
            yield playlist_entry['content']['src']
        
        next_feed_page = next(i['href'] for i in gdata['feed']['link'] if i['rel'] == 'next')


if __name__ == "__main__":
    if len(sys.argv) != 2:
        sys.stderr.write("Usage: {} <playlist id>{}".format(os.path.basename(__file__), os.linesep))
        sys.exit(-1)

    links = get_playlist_links(sys.argv[1])
    
    sys.stdout.write(os.linesep.join(links))
    sys.stdout.write(os.linesep)