old_contents: def test_import_client():
      from pyresponse import PureResponseClient as PureResponseClient
  
  def test_initialize_client():
      from pyresponse import PureResponseClient as PureResponseClient
      pureresponse = PureResponseClient()
  
  def test_authentication():
      from pyresponse import PureResponseClient as PureResponseClient
      pureresponse = PureResponseClient()
      pureresponse.authenticate('tm.system', 'crwkbplf')
  
new_contents: import uuid
  from unittest import TestCase
  
  from pyresponse import PureResponseClient as PureResponseClient
  
  ListName = lambda: str(uuid.uuid4())
  
  
  class BasicTests(TestCase):
      
      def setUp(self):
          self.client = PureResponseClient()
          self.client.authenticate('tm.system', 'crwkbplf')
  
      def test_create_list(self):
          self.client.create_list(ListName(), 
              {'email': 'blackhole@example.com', 'name': 'John Doe'})
  
      def test_create_list_multiple(self):
          self.client.create_list(ListName(), 
              [{'email': 'mars@example.com', 'name': 'John Doe'}, {'email': 'venus@example.com', 'name': 'Jane Doe'}])
  
subject: add list tests