If-else in single statement vs loop

Question

n = int(input())

def factorial(n):
    return 1 if n == 0 else n * factorial(n-1)

factorial(n)

The code above works fine but the code below does not. Help please?

n = int(input())

def factorial(n):
    print(n)
    if n < 1:
        return 1
    else:
        n * factorial(n-1)

factorial(n)

Answer 1

To solve your problem just return the value inside the else:

n = int(input())

def factorial(n):
    print(n)
    if n < 1:
        return 1
    else:
        return n * factorial(n-1)

factorial(n)