def add_numbers(x, y): total = x + y return total print("This won't be printed") print(add_numbers(4, 5))

Question

For what is 'return' used?
And why is print("This won't be printed") is not executed and not printed??

Answer 1

Return produces ("returns") a value when the function is run ("called").

As soon as a function returns a value, the function's code stops executing, so it never gets to the print("This won't be printed") line.

When a function returns a value, nothing happens unless you do something with it, e.g. print it.

The output of the code below will be

This will be printed
9

def add_numbers(x, y):
total = x + y
print("This will be printed")
return total
print("This won't be printed")

print(add_numbers(4, 5))

Answer 2

The line after the return statement is not printed because the function resolved when it got to return. try assigning the function call to a variable and then print the variable to see what return does. It returns a value from the function.

Answer 3

import random

def add(x,y):
return x+y

a = add(1,1)
b = add(8,2)

print(random.randint(a,b))

#run this code and see how it #works