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> #  Set to any value to use proxy.
> PROXY_URL = None  # e.g. libgmail.PROXY_URL = 'myproxy.org:3128'
> 
298c301,309
<             self.opener = urllib2.build_opener(
---
> 
>             if PROXY_URL is not None:
>                 import gmail_transport
> 
>                 self.opener = urllib2.build_opener(gmail_transport.ConnectHTTPHandler(proxy = PROXY_URL),
>                                   gmail_transport.ConnectHTTPSHandler(proxy = PROXY_URL),
>                                   SmartRedirectHandler(self._cookieJar))
>             else:
>                 self.opener = urllib2.build_opener(