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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 main():
 """ Example application that opens a serial device and prints messages to the terminal. """

    try:
        # Retrieve the specified serial device.
        device = AlarmDecoder(SerialDevice(interface=SERIAL_DEVICE))

        # Set up an event handler and open the device
        device.on_message += handle_message

        # Override the default SerialDevice baudrate since we're using a USB device
        # over serial in this example.
        with device.open(baudrate=BAUDRATE):
            while True:
                time.sleep(1)

    except Exception as ex:
        print('Exception:', ex)