The Python Factorial function is one of the Python Math function which is used to find the factorial of a specified expression or an individual number. In this article we will show you, How to use Factorial() function in Python Programming language with example.
Syntax of a Python Factorial Function
The basic syntax of the Factorial Function in Python Programming Language is as shown below:
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Math.factorial(number); |
Number: It can be a number or a valid numerical expression.
- If the number argument is positive integer, Factorial() function will return the Factorial of a given number.
- If the number argument is Negative integer, Factorial() function will return ValueError
- If the number argument is Positive or Negative Decimals, Factorial() function will return ValueError
- If the number argument is not a number, Factorial() function will return TypeError.
Python Factorial Function Example
The Python Factorial function is used to find the factorial of a given number. In this example, We are going to find the factorial of different data types and display the output
PYTHON CODE
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# Python FACTORIAL Function import math Tup = (1, 2, 3, 4 , 5) # Tuple Declaration Lis = [6, 7, 8, 5 , 9] # List Declaration print('Factoial() Function on Positive Number = %.2f' %math.factorial(3)) print('Factoial() Function on Positive Decimal = %.2f' %math.factorial(6)) print('Factoial() Function on Tuple Item = %.2f' %math.factorial(Tup[2])) print('Factoial() Function on List Item = %.2f' %math.factorial(Lis[4])) print('Factoial() Function on Multiple Number = %.2f' %math.factorial(10 + 45 - 48)) print('Factoial() Function on String Value = ', math.factorial('Python')) |
OUTPUT
ANALYSIS
- At the beginning, We declared Python List and Tuple with some random values.
- Within the first two statements, We used the Factorial() Function directly on Positive integers.
- Next two statements, We used the Factorial() Function on Python Tuple and List items. If you observe the above screenshot, Factorial() function is working perfectly on them.
- Next statement, We tried Factorial() Function directly on multiple values
- Next statement, We tried Factorial() Function on String value. As we said before, this will return TypeError: an integer is required (got type str) as output
- Next, We tried Factorial() Function on Decimal value. As we said before, this is returning ValueError: factorial() only accepts integral values as output
- Last, We tried Factorial() Function on Negative value. As we said before, this is returning ValueError: factorial() not defined for negative values as output
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