Factorial of Number in Python

Factorial of number in python. Create a factorials number program using the Python programming language. This program will help you easily locate factorial numbers in Python. It is a key concept in any programming language for beginners. The factorial of a natural number n is the product of positive integers less than or equal to n.

def fact(n):
return 1 if (n==1 or n==0) else n * fact(n - 1);
num = 10;
print("fact of",num,"is",
fact(num))

 

Output:

fact of 10 is 3628800

def() Function in Python

Defining a function in Python is done as follows. The keyword def is used to define a function. In this case, the function name is followed by parameter(s) (). After completing the function definition, calling the function with an argument returns a value. Defining a function in Python is done as follows.

The keyword def is used to define a function. In this case, the function name is followed by parameter(s) (). The colon: indicates the beginning of the function body, which is denoted by an indentation. The return statement determines the value to be returned within the function body.

Return Statement in Python

Python allows you to return functions from functions, store functions in collections such as lists, and treat them in general the same way you would any variable or object. It is possible to define functions within other functions and to return functions. Because functions are the same data as numbers or strings, they can be passed as arguments to other functions and returned from them. We can even define a function within another function and return it to the outside world. This comes as no surprise.