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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 _find_device(self, idVendor, idProduct):
 """Find a USB device by product and vendor id."""

        for bus in usb.busses():
            for device in bus.devices:
                if (device.idVendor == idVendor and
                    device.idProduct == idProduct):
                    return device
        return None