puneetraipuria

def Factorial(num):
    if num == 0:
        return 1
    else:
        return num * Factorial(num-1)

print Factorial(int(input()))   

puneetraipuria

def reverse_string(str):
    return str[::-1]

print reverse_string(raw_input())

puneetraipuria

#page spyder algorithms

import urlparse
import urllib
from bs4 import BeautifulSoup

url = "http://github.com"

urls = [url]
visited = [url]