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The main content of this article is to explain "what are the reasons for the common Python language of crawlers". Interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn "what are the reasons for the common Python language used by reptiles?"

When it comes to web crawlers, I believe we are all familiar with them. Crawlers can get content from websites or applications and extract valuable information. Crawlers can use many programming languages, but Python is the most commonly used. Do you know why? Or analyze the content of the web page in detail.

Python is not fundamentally different from other languages. They are simpler and more efficient than the syntax of Python. In addition, there are several reasons for the popularity of python:

1. Simply grasp the web interface.

Python provides more comprehensive API access to Web page documents than other dynamic scripting languages; the interface of Python is much simpler than other static programming languages.

2, powerful third party, in addition, web crawling sometimes needs to imitate the behavior of browsers, and many websites are not allowed to catch zombies.

At this point, we need to simulate the appropriate behavior structure requirements of UserAgent, such as simulating user login, storing and setting up Session/Cookie. There are good third-party packages in Python to help you do it, such as Requests or Mechanize.

3. Data processing is fast.

Intercepted pages are often processed, such as filtering Html tags, extracting text, and so on. BeautifulSoupPython provides simple document processing capabilities, using very short code to process most documents. In fact, many languages and tools can do the above functions, but Python can do the fastest and cleanest.

In addition to using an efficient programming language, an efficient web crawler also needs the help of an agent IP.

Although Python and CPython are developed by C, Python and C are more troublesome in use. Python needs only 10 lines of code to achieve more than 100 lines of code. But the C language runs faster.

Python has many more parsers than Java, can well support the parsing of web pages, Java also has related crawler libraries, but unlike Python. But both Java and Python can play the role of crawler, but the workload is different, the implementation method is also different. Java is more suitable for dealing with complex web pages and analyzing web content generated by structured data.

At this point, I believe you have a deeper understanding of "what are the reasons for the common Python language used by reptiles?" you might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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