python爬虫03-超时请求

import urllib.request

for i in range(1,10):
    try:
        # 用timeout设置超时限定为1秒
        file = urllib.request.urlopen("http://www.baidu.com",timeout=1)
        data = file.read()
        print(len(data))
    except Exception as e:
        print("出现异常-->" + str(e))