python challenge 4

import urllib.request
nothing = '-50'
url = 'http://www.pythonchallenge.com/pc/def/linkedlist.php?nothing=' (http://www.pythonchallenge.com/pc/def/linkedlist.php?nothing=%27)
L = []
for i in range(-50,50,1):
    response = urllib.request.urlopen(url+nothing)
    html = response.read().decode('utf-8')
    nothing = html.split()[-1:][0]
    L.append(int(nothing))
print(L)