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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def assign_average_value(self) -> None: """ Replace all the parameter values with the averages. Save the current parameter values to restore later. """

        for name, parameter in self._parameters:
            self._backups[name].copy_(parameter.data)
            parameter.data.copy_(self._shadows[name])