Python urllib2 problem: Name or service not known

[Iskendar]

Hi all,

Some time ago I've written some python code to read video data off an IP camera connected via a router to a laptop. Now I try to run this code on a different laptop and router combination, but now I can't access the camera.
Some minimal example code:


import urllib2

url = urllib2.urlopen("http://192.168.1.3/-wvhttp-01-/image.cgi")

This fails and returns the error:

<urlopen error [Errno -2] Name or service not known

When I check further, I cannot access any url via urllib2.urlopen, not the camera nor the router nor localhost. Pinging them poses no problem though, and I can access the video feed and the router admin page in firefox without any issues.
Searching for the problem turned up this discussion (http://forums.gentoo.org/viewtopic-t-556507.html) on the gentoo forums, which didn't provide any solution but did hint that it might be a system-related problem rather than a coding problem.
I run kubuntu 11.10 on the laptop, the router is not connected to the internet and serves as dhcp server for both the laptop and the camera.

[Iskendar]

Never mind it's a proxy problem. I disabled http_proxy in .bashrc for this, but apparently it was also set in /etc/bash.bashrc and I didn't check for that.

That did leave me with the problem how I could get my code to work with the proxy enabled. But I found that one too, just put


import os
os.environ['http_proxy']=''

before importing urllib2.