Code refactor

Python Program for factorial of a number

@@ -1,20 +1,26 @@
-Factorial of a non-negative integer, is multiplication of all integers smaller than or equal to n. For example factorial of 6 is 6*5*4*3*2*1 which is 720.
+"""
+Factorial of a non-negative integer, is multiplication of
+all integers smaller than or equal to n. 
+For example factorial of 6 is 6*5*4*3*2*1 which is 720.
+"""
 
+"""
 Recursive:
-# Python 3 program to find  
-# factorial of given number 
+Python3 program to find factorial of given number 
+"""
 def factorial(n): 
 
     # single line to find factorial 
     return 1 if (n==1 or n==0) else n * factorial(n - 1);  
 
 # Driver Code 
 num = 5; 
-print("Factorial of",num,"is", 
-factorial((num)) 
+print("Factorial of",num,"is", factorial((num)))
+
+"""
 Iterative:
-# Python 3 program to find   
-# factorial of given number 
+Python 3 program to find factorial of given number.
+""" 
 def factorial(n): 
     if n < 0: 
         return 0
@@ -29,5 +35,4 @@ def factorial(n):
 
 # Driver Code 
 num = 5; 
-print("Factorial of",num,"is", 
-factorial(num)) 
+print("Factorial of",num,"is", factorial(num))