python crawler practice

Some complaints

This is the first time I really started to write a technical blog. I always thought that my skills were not good enough to write a blog. requirements, and then I didn’t dare to write. Later I discovered that the road to technology is endless. You can’t learn everything. Everyone grows through mutual exchanges, so today I decided to come up with some useful information to share. for everyone.

This topic is called pythonThe best practices of crawlers. First, let’s talk about why we should write about crawlers. Because I like the language python very much. It is simple, incredibly powerful, and very easy to use. When people mention python, they always think of crawlers first, so I decided to share with everyone what I know about crawlers. As for why I named it Best Practices, it’s because I grew up slowly from a pure novice. I think everyone has the same experience, that is, whenever they encounter a technical knowledge point that interests them, they hope to have a very systematic and basic introductory tutorial so that they can truly enter this field. However, unfortunately, technology Blogs like this are always so profound, leaving those novices with no foundation wandering in infinite pain, wanting to read but not being able to understand. For those great gods, this is certainly good. But it is too unfriendly for novices or people who have a good foundation but don’t understand the industry.

Best Practice Process

It was quite painful for me when I first learned crawlers, because there were no systematic tutorials and I could only learn by reading scattered blogs one by one. So I don’t want a bunch of newbies like me to have the same experience. Based on my own experience, I’ve summarized my set of best practice processes:

1. Configure what you need Environment (ps: It always stumps many novices here)

2. Understand the demo

3. Imitate the demo and carry out your own practice

4. Self-exploration and expansion of content to achieve your own goals

What we need to learn is not just programmingtechnology, Including problem-solving thinking mode, which is also the focus of our learning.
ps: I am not a great person, so if you have any objections, you can ignore the above process. Everyone has their own way of learning.

Practical content

The following is the practical content related to the topic:

• Crawler-related knowledge, including basic crawlers and similar pyspider, etc. FrameworkUsage

• Advanced crawlers, including using selenium to simulate users and using multiple processes in the crawler

• Simple data processing Knowledge, because many people don’t know what to do with the data

• Use some charting plug-ins to display statistical data in the form of charts

• SimpleDjangoKnowledge of website building (how to display data)

ps: This blog will not talk about python related knowledge. If you have some knowledge about python syntax, etc. I don’t know much about it yet, so I recommend reading Liao Xuefeng’s python
. After reading this topic, you should know how to write crawlers, how to use crawler frameworks, how to do simple data analysis and statistics, how to make charts based on statistical information, and how to put Your own charts are displayed through the website. This is our ultimate goal.

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