[pygtk] Python code works in terminal but not with shortcut on the gnome panal

[Edward A Robinson]

The following python code seems to work for me if I run it from the
gnome-terminal but not if I run it from the gnome-panel anyone have
any ideas why this is?

I save the code to ~/.exampleNet.py and in the gnome terminal I am
able to type "./exampleNet.py" and the code will display the google
home page html code. But If I create a custom application launcher to
run "python /home/earobinson/exampleNet.py" on the gnome-panel I get
the error message

Some background I have setup a network proxy and I think that that is
whats getting in the way (When I run the program from the gnome
terminal it detects my proxy but when I run it from the panel it dose
not)

Also the weather applet for the panel works for me.

Code
================================================
#!/usr/bin/env python

import urllib
import gtk

main_window = gtk.Window()
main_window.connect('destroy', lambda *w: gtk.main_quit())

try:
    url_content = urllib.urlopen('http://www.google.com')
    main_window.add(gtk.Label(url_content.read()))
except IOError:
    main_window.add(gtk.Label('             Error            '))

main_window.show_all()

gtk.main()
================================================

Thanks for any help your can provide.

-- 
Edward A Robinson