Write a Python program to find the factorial of a given number:

n=int(input('Enter the number :  '))
fact=1
for i in range(1,n+1):
    fact=fact*i
print(fact)

Output :

Enter the number :  6
720

This is a Python program to calculate the factorial of a given number. The user is prompted to enter a number and the program uses a for loop to calculate the factorial. The factorial of a number is the product of all positive integers up to and including that number.

Let's go through the code line by line:

1. n=int(input('Enter the number: ')) - This line prompts the user to enter a number and stores it in the variable n. The int function is used to convert the input to an integer.

2. fact=1 - This line initializes the variable fact to 1. This variable will be used to store the factorial.

3. for i in range(1,n+1): - This line sets up a for loop that will iterate over the range of numbers from 1 to n+1.

4. fact=fact*i - This line multiplies the current value of fact by the loop variable i and stores the result back in fact.

5. print(fact) - This line prints the final value of a fact, which is the factorial of the input number.

Overall, this program is a simple and effective way to calculate the factorial of a given number in Python.

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If you are a beginner and want to know more about Python programming, you can read my Basics of Python blogs (From part 1 to part 15).

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HAPPY LEARNING !!!