# For loop to handle the factorial calculation Print(" ! ! ! ! 1 is the factorial value 0 ! ! ! ! ") # The default factorial value for zero is one and this is printed here Print(" ! ! ! ! ! Factorial value cannot be intended for negative integers ! ! ! ! ! ") # to verify that the given number is greater than zero incase it is less than zero then the Number = int(input(" Enter the number for which factorial value to be determined : ")) # modifying the value keyed in will produce a different result Where n is any positive integer 3) Calculate factorial using Python math.Web development, programming languages, Software testing & others Python math library contains a factorial() function which calculates the factorial of the input value and returns its output value. #Increase the value of value of `i` on every iterationįactorial: 479001600 Calculate Factorial using Python factorial() function #Factoral can't be find of negative numberįactorial : 3628800 2) Python Program to calculate Factorial using a while loop #Python program to find factorial of a number using While Loop 1) Python Program to calculate Factorial using for loop: #Python program to find factorial of a number using for loop In this tutorial, you will learn how to write a python program to find factorial of any non-negative integer which is greater than 0. There is no factorial defined for negative numbers whereas factorial of 0! is 1. Mathematical formula for Factorial n ! = n ( n - 1)( n - 2)( n - 3)( n - 4)(n - 5). Note: Factorial is represented by exclamatory mark (!). Factorial of any positive number (n) is a product of all number which is less than or equal to (n) but greater than 0.
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