PYTHON 判断网络是否通

import urllib3
import socket
from func_timeout import func_set_timeout
import func_timeout,time
@func_set_timeout(11)
def pdwang():
    try:
        http = urllib3.PoolManager()
        http.request('GET', 'https://baidu.com')
        return True
    except:
        return False

while 1:
    try:
        aa=pdwang()
    except func_timeout.exceptions.FunctionTimedOut:
        print("异常退出")
        aa=False

    if not aa:
        denglu()
    time.sleep(600)