Write a function to calculate the factorial of a number. The factorial of a non-negative integer n is the product of all positive integers less than or equal to n. For example, for input 5 , the output should be 120

Apr 8, 2025 · In Python, we can calculate the factorial of a number using various methods, such as loops, recursion, built-in functions, and other approaches. Example: Simple Python program to find the factorial of a number

Mar 20, 2025 · Learn how to calculate the factorial of a number in Python using loops, recursion, and the math module. Explore efficient methods for computing factorials easily

Here you will get Python program to find factorial of number using for and while loop. The Factorial of a number is calculated by multiplying it with all the numbers below it starting from 1. For example, the factorial of 4 is 24 (1 x 2 x 3 x 4). The below program takes a number from the user as input and finds its factorial. fac = fac * i. Output.

Jan 6, 2022 · How do I go about computing a factorial of an integer in Python? The easiest way is to use math.factorial (available in Python 2.6 and above): If you want/have to write it yourself, you can use an iterative approach: fact = 1. for num in range(2, n + 1): fact *= num. return fact. or a recursive approach: if n < 2: return 1. else:

To write a factorial program in Python, you can define a function that uses recursion or iteration to calculate the factorial of a number. Here is an example using recursion: def factorial(n): if n == 0: return 1 else: return n * factorial(n-1)

Jul 9, 2024 · Using math.factorial () This method is defined in “math” module of python. Because it has C type internal implementation, it is fast. x : The number whose factorial has to be computed. Returns the factorial of desired number. Raises Value error if number is negative or non-integral. Exceptions in math.factorial () Output:

Feb 5, 2025 · Learn how to find the factorial of a number in Python using loops, recursion, and the math module. The factorial of a number is the product of all positive integers from 1 to that number.

Mar 29, 2025 · Write a Python function to calculate the factorial of a number (a non-negative integer). The function accepts the number as an argument. Sample Solution-1: Explanation: In the exercise above the code defines a recursive function named "factorial ()" that calculates the factorial of a given number 'n'.

Oct 19, 2024 · In this article, we explored multiple ways to calculate the factorial of a number in Python and python programs to find factorial of a number, including the use of for loops, while loops, recursion, and Python's built-in function. Each method has its use case: