# Python One Line Code To Find Factorial (3 Methods)

In this article, we present you three different methods to find factorial of a given number in one line. First approach use Lambda Expression, second approach use Reduce Function with Lambda Expression and third approach use Reduce Function with Lambda like in second approach but differently.

## Method 1: Using Lambda Expression

``````
x = lambda num : 1 if num <= 1 else num*x(num-1)

number = int(input('Enter number: '))

print('%d != %d' %(number, x(number)))
``````

Output

```Enter number: 23
23 != 25852016738884976640000
```

## Method 2: Using Reduce Function & Lambda Expression

``````
from functools import reduce

number = int(input('Enter number: '))

factorial = reduce(lambda x, y: x * y, range(1, n+1))

print('%d != %d' %(number, factorial))
``````

Output

```Enter number: 13
13 != 6227020800
```

## Method 3: Using Lambda Expression & Reduce

``````
from functools import reduce

number = int(input('Enter number: '))

Factorial = lambda number: reduce(lambda x, y: x * y, range(1, number+1))

print('%d != %d' %(number, Factorial(number)))
``````

Output

```Enter number: 17
17 != 355687428096000
```