python多线程

from concurrent.futures import ThreadPoolExecutor
import time
import requests

r=requests.session()

def requestUrl(url):
    response = requests.get(url)   #下载页面
    if "lv6.png" in response.text:
        print(response.url)
    return response
#
# 回调函数
#def done(future,*args,**kwargs):
#    response = future.result()   #取得future对象进行操作
#    if "lv6.png" in response.text:
#        print(response.url)
#

def main():
    url="http://c8d9a312-36e4-442f-8d1c-b5f14a5290b9.node3.buuoj.cn/"
    user={"_xsrf":"2%7Cd9aca2c4%7C141a48c4004d577321918c738b2c5968%7C1584286112","username":"sa","password":"sa"}
    r.post(url,data=user)
    seed=[ url+"shop?page="+str(i) for i in range(1,500) ]
    
#    with ThreadPoolExecutor(10) as executor:
#        for each in seed:
#            executor.submit(requestUrl,each).add_done_callback(done)
#    print("----------------")
#    time.sleep(5)

    with ThreadPoolExecutor(max_workers=10) as executor1:
        executor1.map(requestUrl,seed)

if __name__ == '__main__':
    main()