UnboundLocalError downloading a playlist

[tebeka]

$ python2 --version
Python 2.7.4
$ python2 ~/Downloads/youtube-dl --version 
2013.04.22
$ python2 ~/Downloads/youtube-dl 'http://www.youtube.com/watch?v=sRArT81TVEM&list=TLqAypMIFHmmI' --prefer-free-formats -t
[youtube] PL TLqAypMIFHmmI: Downloading page #1
Traceback (most recent call last):
  File "/usr/lib/python2.7/runpy.py", line 162, in _run_module_as_main
    "__main__", fname, loader, pkg_name)
  File "/usr/lib/python2.7/runpy.py", line 72, in _run_code
    exec code in run_globals
  File "/home/miki/Downloads/youtube-dl/__main__.py", line 18, in <module>
  File "/home/miki/Downloads/youtube-dl/youtube_dl/__init__.py", line 558, in main

  File "/home/miki/Downloads/youtube-dl/youtube_dl/__init__.py", line 542, in _real_main

  File "/home/miki/Downloads/youtube-dl/youtube_dl/FileDownloader.py", line 684, in download
  File "/home/miki/Downloads/youtube-dl/youtube_dl/FileDownloader.py", line 460, in extract_info
  File "/home/miki/Downloads/youtube-dl/youtube_dl/InfoExtractors.py", line 96, in extract
  File "/home/miki/Downloads/youtube-dl/youtube_dl/InfoExtractors.py", line 1785, in _real_extract
UnboundLocalError: local variable 'playlist_title' referenced before assignment

[jaimeMF]

This is related to #755, the problem here is that the playlist TLqAypMIFHmmI doesn't exist. Where did you get the link?

[tebeka]

Maybe it's related to #755, however I did try to download the whole list.

I got the url from the first video I'm watching in the playlist, here's a cut&paste from the address bar - http://www.youtube.com/watch?v=sRArT81TVEM&playnext=1&list=TLqAypMIFHmmI

[jaimeMF]

The problem is that the playlist seems to not exist (at least I can't access it), so youtube-dl gets an empty list.
You can download the video by running: youtube-dl http://www.youtube.com/watch?v=sRArT81TVEM

[phihag]

Yup, when the parameter includes a list, we assume a playlist. This is a weird edge case that now just returns an empty list. I'm closing this issue now, but feel free to comment if there's anything we can do to improve the behavior.

[Plaque-fcc]

Hmm, what's on checking if the playlist is empty then falling back to
single video download on playlist fail?