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Web page parsing in the real world of Python crawlers

Source: Internet
Author: User
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Request and response

Request is that we usually browse the Web page, to the server on which the site was requested, and the server received the request, the response returned to us is response, this behavior is called the HTTP protocol, that is, the client (browser) and the server dialog.

Request method

In the context of HTTP1.1, the method requested to the server has get,post,head,put,options,connect,trace,delete, whereget (can crawl more than 90% pages) and Post is the two most common methods

Response

Web page parsing in the real world of Python crawlers

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