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How to start python script by batch file on window Reference https://datatofish.com/batch-python-script/ Assumption - Your python script is manage.py - Create a batch file "run.bat" which is placed in the same directory with your python script. run.bat source code :: find python.exe path @ for %%i in (python.exe) do @ set py = %%~$PATH:i ::run main program %py% %CD% \manage.py ::wait for stop pause manage.py source code print ( "Surprisingly, The naughty kitten defeated a giant python" ) Looking more sample batch file https://www.robvanderwoude.com/batexamples.php

Develop the first python client application by Paho I. Purpose: 1. Try to send messages between 2 clients via MQTT protocol. Then, we will create 2 clients: - One for publishing (or send) the message. Other for subscribing (or receive message). II. Pre-condition: - You already installed Mosquitto broker, Python. III. Step by step 1. Download example from Github https://github.com/eclipse/paho.mqtt.python 2. Modify subscriber(client) source In folder example/client_sub.py. Modify some pieces of source code. before mqttc.connect("mqtt.eclipse.org", 1883, 60) mqttc.subscribe("$SYS/#", 0) after mqttc.connect("192.168.203.76", 1883, 60) mqttc.subscribe("test/topic1", 0) note: "192.168.203.76": IP address of machine which Mosquito broker installed on. 1883: mqtt port 3. Modify publisher(client) source In folder example/publish_single.py. before: publish.single("paho/test/sing

Install Mosquito broker https://mosquitto.org/download/ 1. Install service easily by some click. 2. Check operation Reference: http://www.steves-internet-guide.com/install-mosquitto-broker/ - open command prompt and check installed directory cd C:\Program Files\mosquitto mosquitto -h or mosquitto -v - start service mosquitto -p 1883 - check port 1883 is listening or not netstat -a - add system environment variables. Add below string to the system environment path. It helps you call mosquito in the command line window. ;C:\Program Files\mosquitto Example Reference: https://www.win.tue.nl/~lrahman/iot_2016/tutorial/MQTT_2016.pdf 1. Open the first command windows 2. Start mosquitto by command mosquitto -p 1883 3. Open the second command windows 4. Allow client subcribe the topic by command mosquitto_sub -t 'test/topic' -v This time, a client has the ability to handle the message from publisher. 5. Open the third command windows 6. Publish message