Python Mechanize检查服务器是否可用

I'm trying to write a script which will read a file containing some urls and then open a browser instance using mechanize module. I'm just wondering how I can do so if some url does not exist or if the server is unreachable.

我正在编写一个脚本，它将读取一个包含url的文件，然后使用mechanize模块打开一个浏览器实例。我只是想知道，如果某个url不存在，或者服务器无法访问，我该怎么做。

For Example

例如

import mechanize  

br = mechanize.Browser()  
b  = br.open('http://192.168.1.30/index.php')

What I want to know is how I will get information from mechanize if 192.168.1.30 is unreachable or if http returns 404 Error.

我想知道的是，如果192.168.1.30是不可访问的，或者http返回404错误，我将如何从机械化获取信息。

2 个解决方案

#1

-1

from mechanize import Browser
browser = Browser()
response = browser.open('http://www.google.com')
print response.code

Or Use Python requests library.

或者使用Python请求库。

Sample code demonstrating it:

示例代码演示:

>>>import requests
>>> r = requests.get('http://httpbin.org/get')
>>> r.status_code
200

#2

Try something like this:

试试这样:

from mechanize import Browser
b = Browser()
try:
    r=b.open('http://www.google.com/foobar')
except (mechanize.HTTPError,mechanize.URLError) as e:
    if isinstance(e,mechanize.HTTPError):
        print e.code
    else:
        print e.reason.args

Output:

输出:

If you try 'http://www.google.foo' it will get you a tuple:

如果你尝试http://www.google.foo，它会给你一个元组:

(-2, 'Name or service not known')

(-2，“不知道的名称或服务”)

#1

-1

from mechanize import Browser
browser = Browser()
response = browser.open('http://www.google.com')
print response.code