code: def get_t(self):
          '''
          getter
          Time.
          '''
          if isinstance(self.__t, int) is False:
              raise TypeError("The type of __t must be int.")
          return self.__f get_t(self):
          '''
          getter
          Time.
          '''
          if isinstance(self.__t, int) is False:
              raise TypeError("The type of __t must be int.")
          return self.__t
docs: getter
          Time.