Welcome to the project @dbtegui
The example given to you would be a ‘computer’ talking to the Meshtastic node using the python interface.
This is the fast and easy way to make things like you want happen, especially for testing.
It is possible to create a plugin that will do what you want that runs directly on the Meshtastic node, but this requires much more programing experience and a more in-depth understanding of the project.
This is a great place to start: Temperature Sensing - #4 by crossan007