urllib en https

[Cecil Westerhof]

I have a strange problem. I wrote a script that uses urllib.urlopen to fetch
a page through https. In Python 2.2.2 this works without a problem. But
when I use the script in Python  I get:

Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "/usr/local/lib/python2.4/urllib.py", line 79, in urlopen
    return opener.open(url, data)
  File "/usr/local/lib/python2.4/urllib.py", line 177, in open
    return self.open_unknown(fullurl, data)
  File "/usr/local/lib/python2.4/urllib.py", line 189, in open_unknown
    raise IOError, ('url error', 'unknown url type', type)
IOError: [Errno url error] unknown url type: 'https'

What is happening here? And how can I solve this?