title: Print WSDL file after authentification with python zeep
body: <p>Is there a way to print out or store a wsdl file that requires an authentication using python zeep? I need to download and edit the wsdl file in order to replace some URLs with a proxy. Therefore, I would like to store the wsdl file locally for editing.</p>
  <p>A direct download, e.g. <code>wget https:///example.com/my.wsdl</code> is not possible.</p>
  <p>Using the terminal command for inspecting a wsdl file does not provide any authentication methods:
  <code>python -mzeep  wsdl_link</code></p>
  <p>Accessing a web service works well, but the XML structure of the complete wsdl is not accessible. At least I don't know how search the API and documentation for this.</p>
  <pre><code>from zeep import Client
  from requests import Session
  from requests.auth import HTTPBasicAuth
  from zeep.transports import Transport
  session = Session()
  session.auth = HTTPBasicAuth('my_user', 'my_password')
  wsdl = 'https:///example.com/my.wsdl' 
  client = Client(wsdl=wsdl, transport=Transport(session=session))
  for service in client.wsdl.services.values():
      print(&quot;service:&quot;, service.name)
  
  </code></pre>