Python urllib2 URLError HTTP状态代码。 [英] Python urllib2 URLError HTTP status code.

问题描述

一旦出现URLError异常，我想获取HTTP状态代码：

I want to grab the HTTP status code once it raises a URLError exception:

我尝试了此操作但没有帮助：

I tried this but didn't help:

except URLError, e:
    logger.warning( 'It seems like the server is down. Code:' + str(e.code) )

推荐答案

在捕获到 URLError ，因为在没有可用的HTTP状态代码的情况下（例如，当您遇到连接被拒绝的错误时），会引发该异常。

You shouldn't check for a status code after catching URLError, since that exception can be raised in situations where there's no HTTP status code available, for example when you're getting connection refused errors.

使用 HTTPError 检查特定于HTTP的错误，然后使用 URLError 检查其他问题：

Use HTTPError to check for HTTP specific errors, and then use URLError to check for other problems:

try:
    urllib2.urlopen(url)
except urllib2.HTTPError, e:
    print e.code
except urllib2.URLError, e:
    print e.args

当然，您可能会想做一些比仅打印错误代码更聪明的事情，但是您可以等等。

Of course, you'll probably want to do something more clever than just printing the error codes, but you get the idea.

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