href="/watch\?v=([0-9A-Za-z_-]{11})&[^"]*?list=%s''' % re.escape(playlist_id)
matches = orderedSet(re.findall(video_re, webpage, flags=re.DOTALL))
href="/watch\?v=([0-9A-Za-z_-]{11})&[^"]*?list=%s''' % re.escape(playlist_id)
matches = orderedSet(re.findall(video_re, webpage, flags=re.DOTALL))