Python Urllib2 Can Open Localhost But Not 127.0.0.1

I am using python urllib2 library and can see a strange and nasty problem. Windows 7. My code: import urllib2 as url_request opener = url_request.build_opener(url_request.ProxyHa

Solution 1:

Set a no_proxy or NO_PROXY environment key with 127.0.0.1, optionally with localhost too:

import osos.environ['no_proxy'] = '127.0.0.1,localhost'

On Windows the ProxyOverride key in the HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings registry is consulted as well, you probably have localhost registered as exception. Check your proxy settings to verify this.