Code num = int(input("Enter a Number: ")) if (num == 0): fact = 1 fact = 1 for i in range(1, num5+1): fact = fact * i print("Factorial of ", num, " is ", fact) Explaination getting the input using the input function, But the input must be in the input format so for getting the input as integer type use int() function num = int(input("Enter a Number: ")) Check weather the given number is zero or not if the number is zero then the factorial value will be 1, so we can assume that fact is 1 if (num == 0): fact = 1 if the entered value is not equal to one then assume one variable fact = 1 and then create a for loop which starts from one to the value we want to find the fact value, And then multiple the previous fact value with the loop value For example: lets assume the loop value is [1,2,3,4.....n] then it will multiple the fact value with i value and stores the new...