urllib:处理网络异常

from urllib import request, errorimport sslimport urllib.requestimport socketimport urllib.errorssl._create_default_https_context = ssl._create_unverified_context

1.URLError

try: response = request.urlopen(‘http://gxj.com‘)except error.URLError as e: print(e.reason)

2.HTTPError

try: response =request.urlopen(‘https://cuiqingcai.com/index.htm‘)except error.HTTPError as e: print(e.code, e.headers, e.reason)

3.最好的写法先捕获子类的错误在捕获父类

try: response = request.urlopen(‘https://cuiqingcai.com/index.htm‘)except error.HTTPError as e: print(e.reason, e.code, e.headers)except error.URLError as e: print(e.reason)else: print(‘Request Successfully‘)#4.error 里reason属性返回的不一定是字符串,也可能是一个对象try: response = urllib.request.urlopen(‘https://cuiqingcai.com‘, timeout=1)except socket.timeout as e: print(type(e))

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