python 多线程对post请求服务器测试并发的方法

# -*- coding: utf-8 -*-import requestsimport threadingimport timeclass postrequests(): def __init__(self):  self.url = '请求网址'  self.files = { 'unknown_image':open('刘诗诗.jpg','rb')} def post(self):  try:   r = requests.post(self.url,files=self.files)   print(r.text)  except Exception as e:   print(e)def login(): login = postrequests() return login.post()# if __name__ == '__main__':#  login()try: i = 0 # 开启线程数目 tasks_number = 150 print('测试启动') time1 = time.clock() while i < tasks_number:  t = threading.Thread(target=login)  t.start()  i +=1 time2 = time.clock() times = time2 - time1 print(times/tasks_number)except Exception as e: print(e)