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The web crawler tutorial is so rich, but our public account background often receive students screenshots and questions: what is the reason for the crawler error? Do you know how to fix it?

Why does this happen?

First, the site is constantly updated, the interface is regularly or irregularly updated, and the tutorial we find may have been written on the Internet a year ago, which may not be applicable to the current environment;

Second, it is relatively simple to crawl basic data. In the era of big data, your bottleneck mainly appears in the efficiency of crawling massive data. Distributed crawler is an effective way to improve the crawling efficiency of massive data. You need to adopt different strategies for parallel crawler according to different data.

This is not covered in many tutorials, and even if you do find one to share, if you don’t have a lot of basic knowledge of crawlers, it’s very difficult to understand the practice, frankly: you can’t crawl anything.

Simple can not climb, complex also can not climb, this is why?

Because your crawler foundation is not solid, the knowledge of crawlers is not complete. Neither know a crawler master should have what ability, also do not know how to cultivate these abilities.

Most of the common development of crawler technology is also a little bit, and can be competent for basic work. However, with the development of big data and artificial intelligence, a large number of data-oriented companies begin to emerge, and the importance of crawler engineer becomes more and more prominent.

What do you need to be a qualified reptile engineer? I summarize the following points:

  • Have perfect and systematic reptile knowledge;
  • Understand and be able to use crawler principle and program design flexibly.
  • Familiar with a full set of crawler workflow;
  • Capable of all kinds of crawler work;

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The above are the abilities that a reptile engineer should have. As an excellent reptile engineer, he should also have the ability of data analysis and so on. However, this is not the content for today’s discussion

How to master the basic abilities of a reptile engineer?

A grasp of basic principles. This paper combs the knowledge points needed in crawler, starts from building development environment and designing database, and by crawling the real data of well-known websites, master crawler principle and program design, storage and management of data and web pages, as well as the scheme of multi-machine parallel crawling.

Real reptilian practice. Master the ability of comprehensive use of all technologies, in the real website to crawl data, familiar with the actual work of the common operating environment, farewell skills to learn a lot of, but large-scale use can not be flexibly adjusted according to the needs to maintain performance pain.

Only in this way, you can really master the ability of crawler, can directly skip the adaptation stage of switching operating environment in work, become a crawler master.

The course “Python Reptilian Engineer · Elementary” of Little Elephant College is a reptilian course specially designed for beginners, which explains the basic principles of reptilian from scratch and sorts out and grasps the knowledge points involved in reptilian with the teacher.

? Long press the identification QR code to view details?

? Long press the identification QR code to view details? \

· Course content

In the content of the course from crawler principle, program design, data and web page storage and management layer by layer, covering all, crawler technology is more firmly mastered;

The actual case is crawling the real data of well-known websites, from crawling a single page to the whole website, finally to the multi-machine parallel crawling scheme, teach you to design crawler, let you master crawler knowledge flexible use;

The teacher has many years of practical experience, combined with the course case to give the best design scheme, online answer questions to solve all kinds of questions in learning, to ensure that you learn the best design ideas from the beginning;

· Suitable for the crowd

If you are a new programmer, a student in school, very motivated and want to improve your starting point, this course can start your high salary life; \

If you want to enter the big data industry, crawler is a very good entry direction, can avoid the higher education threshold limit, at the same time, you can also move towards data analysis and other directions;

· Learning methods

The course adopts video + graphic + exercise + homework + q&A teaching method, you can choose flexibly, 24 hours a day at any time to learn. \

Whether it is the sorting and understanding of crawler principles or the construction of multi-machine parallel crawler schemes from a single web page to the whole website, little Elephant’s teaching assistant supervises and guides learning every day to ensure the learning effect and makes more than a little progress every day.

The original price of this course is 699 yuan, now it only costs 199 yuan, 11 video courses + actual practice + teaching assistant services + q&A =199 yuan, let you directly from the beginner to the old crawler!

Click [read article] for more details, buy!

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