Example Analysis of HTTPError of python Crawler

This article will explain in detail the example analysis of the HTTPError of python crawler. The editor thinks it is very practical, so I share it for you as a reference. I hope you can get something after reading this article.

1. HTTPError is a subclass of URLError, which is specially used to handle HTTP request errors, such as failed authentication request.

2. There are three properties: code, reason, and headers.

Code: returns the HTTP status code, for example, 404 indicates that the web page does not exist, 500 indicates an internal error in the server, and so on.

Reason: like the parent class, it is used to return the cause of the error.

Headers: returns the request header.

Example

From urllib import request,errortry: response = request.urlopen ('http://cuiqingcai.com/index.htm')except error.HTTPError as e:print (e.reason, e.code, e.headers, sep='\ n') running result: Not Found404Server: nginx/1.4.6 (Ubuntu) Date: Wed, 03 Aug 2016 08:54:22 GMTContent-Type: text/html Charset=UTF-8Transfer-Encoding: chunkedConnection: closeX-Powered-By: PHP/5.5.9-1ubuntu4.14Vary: CookieExpires: Wed, 11 Jan 1984 05:00:00 GMTCache-Control: no-cache, must-revalidate, max-age=0Pragma: no-cacheLink: Rel= "https://api.w.org/" on" python crawler HTTPError sample analysis "this article is shared here, I hope the above content can be of some help to you, so that you can learn more knowledge, if you think the article is good, please share it for more people to see.