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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 active_devices(self, active_devices):
 """ Sets the active_devices of this ReportBillingData. :param active_devices: The active_devices of this ReportBillingData. :type: int """

        if active_devices is None:
            raise ValueError("Invalid value for `active_devices`, must not be `None`")
        if active_devices is not None and active_devices < 0:
            raise ValueError("Invalid value for `active_devices`, must be a value greater than or equal to `0`")

        self._active_devices = active_devices