import urllib2, re, json

class Youtube:

    def __init__(self, video_id):
        self.video_id = video_id
        larobba = urllib2.urlopen(urllib2.Request('http://youtube.com/watch?v=%s' % video_id)).read()

        pattern = 'ytplayer.config = (.*);</script>'
        maggie = re.findall(pattern, larobba)[0]
        tuttoquanto = json.loads(maggie)

        print tuttoquanto

Youtube('6PGpn6Iw50g')