new_contents: """Solution for python challenge #4:
  http://www.pythonchallenge.com/pc/def/linkedlist.php"""
  import urllib
  
  
  def main(num=12345):
      out = urllib.urlopen(("http://www.pythonchallenge.com/pc/def/"
                            "linkedlist.php?nothing={}").format(num))
      import pdb; pdb.set_trace()
  
subject: add 4.py