geoffnin

### Keybase proof

I hereby claim:

  * I am geoffnin on github.
  * I am geoffnin (https://keybase.io/geoffnin) on keybase.
  * I have a public key ASD7QH-ZsWChV69goh8L-DXUIyj_1dxtQ6Swmk7GUidkRAo

To claim this, I am signing this object:

geoffnin

import sys, re


def find_leading_nodes(graph):
    # get list of edges pointing to anything
    used_keys = [v for k in graph for v in graph[k]]
    # return a list of nodes who are not present in 'used keys'
    return [k for k in graph if k not in used_keys]
    
def has_incoming_edges(graph, node):

geoffnin

import sys, os, re
import urllib2
from bs4 import BeautifulSoup

euler_url = 'http://projecteuler.net/problem='

def main():
    for problem_number in sys.argv[1:]:
        page = urllib2.urlopen(euler_url + problem_number)
        html = page.read()