check_problem.py

import requests, re

problem_name = 'even-or-odd'
problem_url = 'https://www.codewars.com/kata/' + problem_name
users = [ 'fabiopedrosa', 'johnsardine', 'disbeat', 'pgcmarques', 'nnunobm', 'alexp100' ]

problem_id = re.findall('<div class="info-row code-challenge" data-id="(.+?)"', requests.get(problem_url).text)[0]
users = dict( [ (u, []) for u in users ] )

for user in users:
    token = None
    cids = {}
    for page in range(0, 100):
        url = "https://www.codewars.com/users/%s/completed?page=%d" % (user, page)
        r = requests.get(url, headers = { 'x-requested-with': 'XMLHttpRequest', 'x-csrf-token': token })
        if token == None: token = re.findall('content\="(.+?)" name="csrf-token"', r.text)[0]
        pids = re.findall("data\-id=\"(.+?)\"", r.text)
        if len(pids) == 0: break
        for cid in pids: cids[cid] = True
    print "\t=> %s has solved %d problems" % (user, len(cids))
    users[user] = cids

print
print "*%s* (%s)" % ( problem_name, problem_url )
print  
for user in users.keys():
    print user, "Yep!" if problem_id in users[user] else "Nop"