class ProxyThread(threading.Thread):
	def run(self):
		ProxyThread.open += 1;
		list = ProxyThread.list
		while len(list):
							
			item = list.pop()
			# проверка
			#time.sleep(10)
		ProxyThread.open -= 1;

# запускаем потоки
for x in xrange(10):
	ProxyThread().start()
		
# ожидаем
while ProxyThread.open:
	time.sleep(1)

# продожаем

# ожидаем
ProxyThread.join()

# продолжаем

threads = [ProxyThread() for x in xrange(10)]

for th in threads:
    th.start()

for th in threads:
    th.join()