异常处理
1、使用URLError进行异常处理
# -*- coding: UTF-8 -*-
from urllib import request
from urllib import error
if __name__ == "__main__":
url = 'https://blog.csdn.net/asialee_bir' #错误链接
try:
response=request.urlopen(url)
file=response.read().decode('utf-8')
print(file)
except error.URLError as e:
print(e.code)
print(e.reason)异常结果：（403错误表示禁止访问）
2、使用HTTPError进行异常处理
# -*- coding: UTF-8 -*-
from urllib import request
from urllib import error
if __name__ == "__main__":
url = 'https://blog.csdn.net/asialee_bir' #错误链接
try:
response=request.urlopen(url)
file=response.read().decode('utf-8')
print(file)
except error.HTTPError as e:
print(e.code) #返回状态码
print(e.reason)
异常结果：（403错误表示禁止访问）
注意：URLError是HTTPError的父类
3、URLError和TTPError混合使用
# -*- coding: UTF-8 -*-
from urllib import request
from urllib import error
if __name__ == "__main__":
url = 'https://blog.baidusss.net' #不存在的链接
try:
response=request.urlopen(url)
file=response.read().decode('utf-8')
print(file)
except error.URLError as e:
if hasattr(e,'code'): #使用hasattr()判断是否有这些属性
print('HTTPError')
print(e.code)
if hasattr(e,'reason'):
print('URLError')
print(e.reason)
