code: def get(self, key, default=None):
          
          if key in self.__cli:
              return self.__cli[key]
          if key in self.__config:
              return self.__config.get(key)
          if key in self.__defaults:
              return self.__defaults.get(key)
          return default
docs: Get the value for `key`.
  
          Gives priority to command-line overrides.
  
          Args:
              key: str, the key to get the value for.
  
          Returns:
              object: The value for `key`