python 测试网站并发情况

#coding=utf-8
import requests
import json
import threading
import time
import uuid
class postrequests():
    def __init__(self):
        
        self.url = 'http://www.baidu.com' #请求链接
        self.data = {} #传递参数
        self.headers = {'content-type': 'application/json'} #请求头
        self.data = json.dumps(self.data)
 
    def post(self):
        try:
            r = requests.post(self.url, self.data, headers=self.headers)
            return r.text
            # print(r.text)
        except Exception as e:
            print("报错了002"+"n")
 
def kquan_bf():
    login = postrequests()
    return login.post()
    
 
try:
    i = 0
    # 开启线程数目
    tasks_number = 1000  #并发数量
    print('测试启动'+"n")
    time1 = time.perf_counter()
    while i < tasks_number:
        t = threading.Thread(target=kquan_bf)
        t.start()
        i +=1
    time2 = time.perf_counter()
    times = time2 - time1
    print(str(times/tasks_number)+"n") #每次请求用时
except Exception as e:
    print("报错了001"+"n")  #请求结果