Python Program to Find Factorial of Number Using Recursion

Hi,

In this video I tried to explain the Python Program to Find Factorial of Number Using Recursion

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Factorial of a number is product of numbers and the numbers below it.
For example seven factorial 7! = 7 * 6 * 5 * 4 * 3 * 2 * 1
zero factorial is 1 : 0! = 1
factorial of negative number is void - it cant be calculated

Recursion refers to function calling itself directly or indirectly.
Function a calling b and b calling a is indirect recursion.

Function a calling itself a is direct recursion.

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[liri]

Could you explain please why there is no else after the if condition? It only says return, without else

def fact(x):
if x == 0:
return 1
return x * fact(x - 1)

x = int(input('Enter 4: '))
print(fact(x))