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

Here, the number whose factorial is to be found is stored in num, and we check if the number is negative, zero or positive using if...elif...else statement. If the number is positive, we use for loop and range() function to calculate the factorial.

Jan 6, 2022 · 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: return n * factorial(n-1)

Jul 9, 2024 · In Python, math module contains a number of mathematical operations, which can be performed with ease using the module. math.factorial() function returns the factorial of desired number. Syntax: math.factorial(x) Parameter: x: This is a numeric expression.

Mar 20, 2025 · This Python tutorial explains, how to print factorial of a number in Python, Python program to print factorial of a number using function, Python program to find factorial of a number using while loop, etc.

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)

Feb 28, 2020 · Let’s analyze how we can write this mathematical function in Python. We can directly use the math module’s factorial function to do the work for using: return math.factorial(x) Output. We’ll also look at finding this function using other methods: let’s …

Mar 31, 2025 · Learn several ways to find the factorial of a number in Python with examples, ranging from looping techniques to more concise recursive implementations and the utilization of built-in library functions.

Oct 19, 2024 · Learn to write a factorial program in Python using for loops, while loops, recursion, and functions with code examples, detailed explanations and use cases

We begin with a basic understanding of the factorial algorithm and how to calculate it in mathematics. Next, we show you different approaches to writing Python programs to find the factorial of a number using For Loop, While Loop, Functions, and Recursion.