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Python web crawler and Information extraction "notes"

Source: Internet
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The following is a "web crawler" course (China MOOC) study notes

"All-purpose station B"

Core idea:

The Website is the API

Course Outline:

First, requests and robots.txt

1.Requeests automatic crawling of HTML pages, automatic network request submission

2.robots.txt

Web crawler Exclusion Standard

Second, BeautifulSoup parsing HTML page

Third, re regular expression, in advance page key information

Four, Scrapy network crawler principle Introduction, Professional Crawler Framework Introduction

Python web crawler and Information extraction "notes"

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