use Python) Use the Design Recipe to write a function factorial that when given a positive integer calculates the factorial. If given a negative integer or not an integer), the function should return None. If given 0, it should return 1. Include a docstring!
use Python) Use the Design Recipe to write a function factorial that when given a positive integer calculates the factorial. If given a negative integer or not an integer), the function should return None. If given 0, it should return 1. Include a docstring!
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question
The factorial of a (positive) integer is the product of each of the integers from 1 to the given integer.
For example, 3! = factorial(3) = 3*2*1 = 6.
(use Python) Use the Design Recipe to write a function factorial that when given a positive integer calculates the factorial. If given a negative integer or not an integer), the function should return None. If given 0, it should return 1.
Include a docstring!
Note: You may assume all arguments passed to this function will be numeric.
Write three assert_equal statements to test your function.
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