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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 getPortNumberList(self):
 """ Get the port number of each hub toward device. """

        port_list = (c_uint8 * PATH_MAX_DEPTH)()
        result = libusb1.libusb_get_port_numbers(
            self.device_p, port_list, len(port_list))
        mayRaiseUSBError(result)
        return list(port_list[:result])