Index: Python-2.7.1/Lib/urllib.py
===================================================================
--- Python-2.7.1.orig/Lib/urllib.py
+++ Python-2.7.1/Lib/urllib.py
@@ -1350,6 +1350,7 @@ def proxy_bypass_environment(host):
     hostonly, port = splitport(host)
     # check if the host ends with any of the DNS suffixes
     for name in no_proxy.split(','):
+        name = name.strip()
         if name and (hostonly.endswith(name) or host.endswith(name)):
             return 1
     # otherwise, don't bypass