[Python-Dev] urllib2/urllib incompatibility?

[Vinay Sajip]

> Not top-posting, but gmane seems too finicky in this area.

I encountered what seems like an incompatibility between urllib and urllib2 in
the way they handle file:// URLs, is this a bug? I had a look on the bug tracker
and via Google to see if there were prior reports, but perhaps my search-fu is
deficient. Here's a console session to illustrate:

vinay at eta-karmic:/tmp$ echo Hello, world! >hello.txt
vinay at eta-karmic:/tmp$ cat hello.txt 
Hello, world!
vinay at eta-karmic:/tmp$ python
Python 2.6.4 (r264:75706, Dec  7 2009, 18:45:15) 
[GCC 4.4.1] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import urllib,urllib2
>>> s = 'file:////tmp/hello.txt'
>>> f1 = urllib.urlopen(s)
>>> f1.read()
'Hello, world!\n'
>>> f2 = urllib2.urlopen(s)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python2.6/urllib2.py", line 124, in urlopen
    return _opener.open(url, data, timeout)
  File "/usr/lib/python2.6/urllib2.py", line 389, in open
    response = self._open(req, data)
  File "/usr/lib/python2.6/urllib2.py", line 407, in _open
    '_open', req)
  File "/usr/lib/python2.6/urllib2.py", line 367, in _call_chain
    result = func(*args)
  File "/usr/lib/python2.6/urllib2.py", line 1240, in file_open
    return self.parent.open(req)
  File "/usr/lib/python2.6/urllib2.py", line 389, in open
    response = self._open(req, data)
  File "/usr/lib/python2.6/urllib2.py", line 407, in _open
    '_open', req)
  File "/usr/lib/python2.6/urllib2.py", line 367, in _call_chain
    result = func(*args)
  File "/usr/lib/python2.6/urllib2.py", line 1287, in ftp_open
    raise URLError('ftp error: no host given')
urllib2.URLError: <urlopen error ftp error: no host given>
>>> 

Anyone seen this before? Should I file an issue on the tracker? If I've missed
something obvious, sorry for the noise, but please do tell!

Regards,

Vinay Sajip