import urllib, re, time
start, f, count = time.time(), open("user.txt", "w+"), 115
while True:
    if count == 122:
        f.close()
        print 'collection time:', time.time() - start, '\n', 'collected:', str(len(open('user.txt', 'r').readlines()))
        break
    for user in (re.findall('profile.php\?id=\d+\">([^<]+)</a>', urllib.urlopen('http://python.su/forum/userlist.php?username=&show_group=-1&sort_by=username&sort_dir=ASC&p='+str(count)).read())):
        f.write(user + '\n')
        print user
    count += 1

import urllib, re, threading, Queue
f, queue = open("user.txt", "w+"), Queue.Queue()
def start():
    while True:
        if queue.empty():
            if t.isAlive():
                break
            break
        for user in (re.findall('profile.php\?id=\d+\">([^<]+)</a>', urllib.urlopen(queue.get()).read())):
            f.write(user + '\n')
            print user
        queue.task_done()
for count in [x for x in xrange(115, 122, 1)]:
    queue.put('http://python.su/forum/userlist.php?username=&show_group=-1&sort_by=username&sort_dir=ASC&p='+str(count))
for i in xrange(5):
    t = threading.Thread(target = start)
    t.start()
queue.join()

import urllib, re, threading, Queue
f, queue = open("user.txt", "w+"), Queue.Queue()

def start():
    while True:
        item = queue.get()
        if item is None:
            queue.task_done()
            return
        data = urllib.urlopen(item).read()
        for user in (re.findall('profile.php\?id=\d+\">([^<]+)</a>', data)):
            f.write(user + '\n')
            print user
        queue.task_done()


for count in [x for x in xrange(115, 122, 1)]:
    queue.put('http://python.su/forum/userlist.php?username=&show_group=-1&sort_by=username&sort_dir=ASC&p='+str(count))

threads = []
for i in xrange(5):
    t = threading.Thread(target = start)
    threads.append(t)
    t.start()

for t in threads:
    queue.put(None)

queue.join()
for t in threads:
    t.join()