About return code in Python3

Question

what does "return" actually do besides returning results ?

Answer 1

That's exactly what it does, it returns a value or values.
it's used to export data from a function

Answer 2

Leave a function and return you to the point where you called the function from.

At the bottom of the function code this would happen anyway, but if you want to leave a function in the middle, returning nothing (None), you can use it - just like 'break' to leave a loop.