Hi there,
I have used MIT AI2 in conjunction with the arduino IDE, using the Xiao Nrf52840 Sense MCU and some BLE characteristics , with READ, WRITE and Notify attributes ALL work Well.
You Define the service and allowing String’s , HEX values or My fav Booleens… 
In-My app Connect to an advertising peripheral and receive the IMU data and alarms (motion, free-fall, Drop and Impact). I can SET the sensitivity of the IMU Gyro’s and Accelerometer and read the battery level and Temp. Search the forum for the demo’s and code. It’s NOT python but you can do the same thing.
HTH
GL 
PJ
Paddle sounds cool , I gave my wife a Pickle ball set for xmas talk about LOL… 
