python简单多线程：返回执行结果

简单多线程返回结果：

import threading
import time

def add(x,y):
    print("add")
    return x+y

def multi(x,y):
    print("multi")
    return x*y


class WorkThread(threading.Thread):
    """
    继承线程类，重写run方法
    """

    def __init__(self,func,x,y):
        super(WorkThread,self).__init__()
        self.func = func
        self.x = x
        self.y = y

    def run(self):
        # time.sleep(3)
        ret = self.func(self.x,self.y)
        # 打印结果
        print(ret)




if __name__ == "__main__":

    print("start")
    wt_obj = WorkThread(add,1,2)
    wt_obj1 = WorkThread(multi,3,4)
    wt_obj.start()

    # 执行完子线程再结束主线程
    wt_obj.join()

    # 不等子线程是否结束，主线程结束就结束
    # wt_obj.setDaemon(True)

    wt_obj1.start()
    wt_obj1.join()
    # wt_obj1.setDaemon(True)
    print("end")


# 结果：
    # start
    # add
    # 3
    # multi
    # 12
    # end