sawbutter.py

import time
from pyquery import PyQuery as pq
seen = set()
start = "http://www.reddit.com/r/pics/comments/i24rp/every_time_i_see_the_vancouver_kiss_submitted/c209bus"


next = start
while True:
    if next in seen:
        print "Recursion detected, abort!"
        break

    seen.add(next)

    d = pq(url=next)
    match = d(".usertext.border .usertext-body a:first")

    if match:
        print "Going deeper: %s" % (next, )
        next = match.attr("href")
    else:
        print "No match here %s, abort" % (next, )
        break

    time.sleep(0.1)