What is the logic of this code ? (lines 4 & 5)

Question

Would you describe the logic of lines 4 & 5 of this code ?

https://code.sololearn.com/c3npSyg0rahb/?ref=app

Answer 1

I'm pretty sure that "func" is a pre-imported function name, and that you only have to define it if you want it to do something specific.