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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 open(self):
 """ Open device. Returns an USBDeviceHandle instance. """

        handle = libusb1.libusb_device_handle_p()
        mayRaiseUSBError(libusb1.libusb_open(self.device_p, byref(handle)))
        result = USBDeviceHandle(self.__context, handle, self)
        self.__close_set.add(result)
        return result