gistfile1.py

  context = pyrax.create_context(id_type="rackspace", username=username, tenant_id=tenant_id)
  context.auth_with_token(auth_token, tenant_id=tenant_id)
  if "compute" in context.services:
      servers = pyrax.connect_to_cloudservers(context=identity, region=region)
      print servers.list()
  else:
      print "You don't have a 'compute' endpoint in your catalog"