What are the advantages of writing crawlers in python language

This article mainly introduces the advantages of writing crawlers in python language, which has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, let the editor take you to understand it.

What are the advantages of writing crawlers in python?

1. The interface for crawling the web page itself

Compared with other static programming languages, such as java,c#,C++,python, the interface for crawling web documents is more concise; compared with other dynamic scripting languages, such as perl,shell,python 's urllib2 package, it provides a more complete API for accessing web documents.

In addition, crawling web pages sometimes needs to simulate the behavior of browsers, and many websites are blocked from crawling stiff crawlers. This is what we need to simulate the behavior of user agent to construct appropriate requests, such as simulating user login, simulating session/cookie storage and settings. In python, there are excellent third-party packages to help you, such as Requests,mechanize.

2. Processing after web page crawling

Crawling web pages usually need to be processed, such as filtering html tags, extracting text, and so on. Python's beautifulsoap provides concise document processing capabilities that can process most documents in very short code. In fact, the above functions can be done in many languages and tools, but the fastest and cleanest can be done with python.

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