<urlopen error [Errno -3] Temporary failure in name resolution>

I use below code to authenticate in SharePoint in my view:

import suds  import logging    logging.basicConfig(level=logging.INFO)  logging.getLogger('suds.client').setLevel(logging.DEBUG)    from suds.client import Client    url = 'http://portal:8080/rashno/_vti_bin/lists.asmx?WSDL'    from suds.transport.https import WindowsHttpAuthenticated    ntlm = WindowsHttpAuthenticated(username='***', password='***')  client = Client(url, transport=ntlm)

But i got this error:

<urlopen error [Errno -3] Temporary failure in name resolution>

but when do this with python shell , it authenticate me in sharepoint and after that i can use other sharepoint service with view or shell. can any one tell me whats the problem?

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