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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 childDataReceived(self, childFD, data):
 """Relay data received on any file descriptor to the process """

        protocol = getattr(self, 'protocol', None)
        if protocol:
            protocol.dataReceived(data)
        else:
            self.data.append((childFD, data))