The below code prints none at the end

Question

def twoSum(nums, target):
    if len(nums) <= 1:
        return False
    for i in range(len(nums)):
        print(i)

var1 = [2, 7, 11, 15]
var2 = 9
print(twoSum(var1, var2))

problem: works but prints none at the end. anyone know? i tried to change len(nums) in the for i in range line to a number like 1 and still?

Answer 1

the code after return does not execute. Your IDE should have shown you a warning about it.

Because you're printing the value of twoSum() which doesn't have one, it returns nothing.