I have taken online classes with python. I am excited to say I have started making progress! I still can’t wrap my head around self though. I want to build a very simple algo that buys or sells in a 2 point band around mid. The sell for a 2 point move. So if it’s. Below mid and retraces back to mid (hi + lo) / 2  then it sells. And if it breaks the 2 point band it exits trade. How would I go about designing this?