Python多线程

#!/usr/bin/python3

import pymysql
import os
import datetime
import threading
import time

import requests

rangetime = 100

start = datetime.datetime.now()
os.environ['NLS_LANG'] = 'SIMPLIFIED CHINESE_CHINA.UTF8'



class myThread (threading.Thread):
    def __init__(self, threadID, name, counter):
        threading.Thread.__init__(self)
        self.threadID = threadID
        self.name = name
        self.counter = counter
    def run(self):
        print ("开始线程：" + self.name)
        print_time(self.name, self.counter)
        print ("退出线程：" + self.name)

def print_time(threadName, counter):
    while counter:
        # 执行业务
        url = "https://chp.shadiao.app/api.php"
        time.sleep(1)
        r = download_page(url)
        list = []
        data = [r]
        list.append(data)
        result = bathInsertChpData(list)
        print(threadName, '    **   ', rangetime - counter , '  **   ',result)
        counter -= 1


def main():
    t_list=[]
    for i in range(80):     #启动线程数
        t = myThread(i, "Thread-%s"%i, rangetime)
        t_list.append(t)
        t.start()
    for t in t_list:
        t.join()
    print("退出主线程")


if __name__ == '__main__':
    main()