python 多线程在 while True:里的操作方式

import queue
import threading
import datetime
import time


class RegistWorkerFactory():
    def __init__(self, domain=None):
        self.domain = domain
        self.addtime = datetime.datetime.now()

    def get_worker(self):
        print("get work, start registing....")
        if (datetime.datetime.now() - self.addtime).seconds > 60:
            return False
        return ParseCommand(self.domain)


class ParseCommand(threading.Thread):
    def __init__(self, domain=None):
        threading.Thread.__init__(self)
        self.domain = domain

    def run(self):
        print("start parse {0}".format(self.domain))


class Test():
    def __init__(self):
        self.workers = queue.Queue()
        # put
        self.workers.put(RegistWorkerFactory('domain1.com'))
        self.workers.put(RegistWorkerFactory('domain2.org'))

    def run(self):
        while True:
            threads = []
            for i in range(self.workers.qsize()):
                temp = self.workers.get()
                thread = temp.get_worker()
                if thread:
                    # thread <ParseCommand(Thread-85, initial)> 会不停的从Thread-1增加
                    print("thread", thread)
                    self.workers.put(temp)
                    threads.append(thread)

            for t in threads:
                time.sleep(.2)
                t.start()

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

            time.sleep(1)
            print("\n{} - {}\n".format(datetime.datetime.now(), '*'*50))

notify = Test()
notify.run()