Flask-SocketIO-Chat VS mqtt-web-test

Reddit uses flask as part of its backend (according to stackshare.io) if you want one of the ultimate examples, but if you want to learn reddit is probably not the best example. For splitting up your routes, you need to make a module and import your filles from each other from there to split it up, so you will need to declare a __init__.py file. like this example (I know you said you didn't want them but tehy are the best example to show you).

As usual, Miguel Grinberg has an example: https://github.com/miguelgrinberg/Flask-SocketIO-Chat

I think this worth another thread, I decided to do blueprint this app to another one. Can flask-socketio run in a single blueprint or must be run in the main app where i use the command socketio.run(app) ? I'm seeing this example and still learning on it

An update to my question (i'd solved the text display), repo for reference. So now I wanted to store received data into csv. Reason is i will display in a graph/chart later. For some reason it doesn't work where I don't see the data being updated in csv. I used the example from here and here (base code is in here). With those example, my code is:

I gonna post the repo here so you can check what's faulty there. I use DHT11_MQTT_Pub.ino to pub/sub with esp (although i can use mqtt_pub_test.py as dummy). Flask server is in mqtt-mosquitto-pi.py.