Two way communication using Python (bleak) / Cannot discover services & characteristics

Great! Did you have to make the change I described above? If so I'll change the example code on the website

Yup! That is what fixed it!

I got the project to work the way I was expecting: the device may be flipped to turn the fan on and off and is controlled by a temperature. I used node with @abandonware/noble for the server like I wished! Now I know enough to make the project for my sister. I am super stoked!

Thanks for the help! I now understand BLE two way communications!

BTW -- if you want to post it as a project, I have the completed thermostat code and instructions here:
https://github.com/boomninjavanish/motio­n-thermostat

I will improve upon this project over time as I really needed the thermostat. (I plan on adding two more features to it soon.)