Visualise line by line code execution in Python

I stumbled across this website that allows you to visualise line by line execution ina Python program. This may be useful for students who are unclear about how a function (or blocks of code) run within a program:

http://pythontutor.com/visualize.html#code=def%20hi%28name%29%3A%0A%20%20%20%20print%28%22hello%20%22%20%2B%20name%29%0A%20%20%20%20%0Ahi%28%22bob%22%29%0Ahi%28%22jeff%22%29&cumulative=false&curInstr=8&heapPrimitives=nevernest&mode=display&origin=opt-frontend.js&py=3&rawInputLstJSON=%5B%5D&textReferences=false

This was recommended by Al Sweigart in his Automate The Boring Stuff with Python (https://automatetheboringstuff.com/)