https://docs.microsoft.com/ko-kr/azure/iot-hub/iot-hub-python-getstarted https://github.com/Azure/azure-iot-sdk-python/blob/master/service/samples/iothub_registrymanager_sample.py https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-live-data-visualization-in-power-bi?WT.mc_id=7061727469636c65