04.py

import requests

def getNext(arg):
 url = "http://www.pythonchallenge.com/pc/def/linkedlist.php"
 params = "nothing={}".format(arg)
 res = requests.get(url, params)
 cont = res.text
 print(cont)
 ary = cont.split(' ')
 next_arg = ary[-1]
 if next_arg.isdigit():
 print(next_arg)
 getNext(next_arg)
 else:
 print("result is: {}".format(next_arg))


getNext(12345)