线程池

from threading import Thread,current_thread
from queue import  Queue
import time

class ThreadPool:
    def __init__(self,n):
        self.queue=Queue()
        for i in range(n):#在线程池里面开启n个线程
           Thread(target=self.run,args=(self.queue,),daemon=True).start()
    def run(self,queue):
        while True:
            task,args=self.queue.get()
            print(current_thread(),task(*args))

            self.queue.task_done()
    def applay_async(self,task,args=()):
        self.queue.put((task,args))
    def join(self):
        self.queue.join()

def func(*args):
    time.sleep(4)
    #print(1)
    return args
pool=ThreadPool(2)
pool.applay_async(func,(1,2))
pool.applay_async(func,(1,2))
pool.join()