what is the value of using return() over print() within functions?

Answer 1

if you want to take the value of the func to the main program you can use the return statement else you can print it inside the func itself

Answer 2

It returns None value and print [] (empty) in Python. In same other programs it calls Null etc.

Answer 3

Your function can do something and you can do with function result. There are 3 cases:
1. Your function not print (Python command "print"), not send ("return") result.
2. You can print function result by "print" command.
3. You can return function result by "return" command when function is calling. (example calling function: my_value = my_func().