import threading
import time

class MyThread(threading.Thread):

    def __init__(self,func,args=()):
        super(MyThread,self).__init__()
        self.func = func
        self.args = args

    def run(self):
        self.result = self.func(*self.args)

    def get_result(self):
        try:
            return self.result  # 如果子线程不使用join方法，此处可能会报没有self.result的错误
        except Exception:
            return None

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


def main():
    t_list = []
    t_data = []

    for i in range(3):
        t = MyThread(add, (i,i))
        t_list.append(t)
        t.start()

    for t in t_list:
        t.join()  # 一定要join，不然主线程比子线程跑的快，会拿不到结果
        t_data.append(t.get_result())
        print(t.get_result())

if __name__ == '__main__':
    main()