After upgrading the port lang/python to version 2.4, the port
net/py-bittorrent is broken.

This appears to be an incompatibility in bittorrent's zurllib.py file; the
patch below has also been sent to the bittorrent development list.

This problem, and the same solution, appears to also apply to the port
net/bittornado.

Fix: Apply the following patch to net/py-bittorrent:
How-To-Repeat: $ btdownloadheadless.py 'http://people.freebsd.org/~scottl/5.3-torrent/5.3-RELEASE-i386-all.torrent'
Traceback (most recent call last):
  File "/usr/local/bin/btdownloadheadless.py", line 163, in ?
    run(argv[1:])
  File "/usr/local/bin/btdownloadheadless.py", line 158, in run
    download(params, h.chooseFile, h.display, h.finished, h.error, Event(), cols, h.newpath)
  File "/usr/local/lib/python2.4/site-packages/BitTorrent/download.py", line 120, in download
    h = urlopen(config['url'])
  File "/usr/local/lib/python2.4/urllib2.py", line 130, in urlopen
    return _opener.open(url, data)
  File "/usr/local/lib/python2.4/urllib2.py", line 364, in open
    response = meth(req, response)
  File "/usr/local/lib/python2.4/urllib2.py", line 468, in http_response
    code, msg, hdrs = response.code, response.msg, response.info()
AttributeError: addinfourldecompress instance has no attribute 'code'