python获取threading多线程的返回值

import threading
import os
import sys

class TestThread(threading.Thread):
    def __init__(self, func, args=()):
        super(TestThread, 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(num):
    print(num)
    return num+1000


def task_run():
    try:
        p = []
        for i in range(5):
            p.append(TestThread(func=add, args=(i,)))
        for j in p:
            j.start()
        for j in p:
            j.join()
            res = j.get_result()
            print(res)
    except Exception as err:
        print(str(err))