code: def is_app(command, *app_names, **kwargs):
      
  
      at_least = kwargs.pop('at_least', 0)
      if kwargs:
          raise TypeError("got an unexpected keyword argument '{}'".format(kwargs.keys()))
  
      if len(command.script_parts) > at_least:
          return command.script_parts[0] in app_names
  
      return False
docs: Returns `True` if command is call to one of passed app names.