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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:
 async def main(loop):
 """Demonstrate functionality of PyVLX."""

    pyvlx = PyVLX('pyvlx.yaml', loop=loop)
    # Alternative:
    # pyvlx = PyVLX(host="192.168.2.127", password="velux123", loop=loop)

    # Runing scenes:
    await pyvlx.load_scenes()
    await pyvlx.scenes["All Windows Closed"].run()

    # Changing position of windows:
    await pyvlx.load_nodes()
    await pyvlx.nodes['Bath'].open()
    await pyvlx.nodes['Bath'].close()
    await pyvlx.nodes['Bath'].set_position(Position(position_percent=45))

    # Changing of on-off switches:
    # await pyvlx.nodes['CoffeeMaker'].set_on()
    # await pyvlx.nodes['CoffeeMaker'].set_off()

    # You can easily rename nodes:
    # await pyvlx.nodes["Window 10"].rename("Window 11")

    await pyvlx.disconnect()