factoria of a given number

Author: avinashn

factorial.py

@@ -0,0 +1,12 @@
+__author__ = 'Avinash'
+
+num = int(input("Enter a number: "))
+factorial = 1
+if num < 0:
+    print("Please enter a positive integer")
+elif num == 0:
+    print("The factorial of 0 is 1")
+else:
+    for i in range(1, num + 1):
+        factorial *= i
+    print("The factorial of", num, "is", factorial)