code: def get_assistant(filename):
      
  
      agent_name = os.path.splitext(filename)[0]
  
      try:
          agent_module = import_with_3(
              agent_name, os.path.join(os.getcwd(), filename))
  
      except ImportError:
          agent_module = import_with_2(
              agent_name, os.path.join(os.getcwd(), filename))
  
      for name, obj in agent_module.__dict__.items():
          if isinstance(obj, Assistant):
              return obj
docs: Imports a module from filename as a string, returns the contained Assistant object