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)
