Do you have to learn crawlers to learn python?

You don’t have to learn crawlers to learn python. Python has a wide range of applications, such as software development, scientific computing, automated operation and maintenance, cloud computing, web development, web crawlers, artificial intelligence, etc.

#In the minds of many Python beginners, learning Python means learning crawlers, and nothing else can be done. In fact, this is a very one-sided understanding. Today, let’s talk about whether you should learn crawlers to learn Python.

Python has a wide range of employment, such as general software development, scientific computing, automated operation and maintenance, cloud computing, web development, web crawlers, cloud computing, artificial intelligence, etc. If you are a beginner with zero foundation, then it is recommended that you learn the Python crawler direction. Why? There are several reasons:

1. Obtain the address of the website

Some website URLs are very easy to obtain, which is obvious, but some URLs require us to analyze them in the browser

2. Requesting the url

is mainly to obtain the source code of the URL we need, so that we can obtain the data

3. Get the response and obtain the specified data in the source code

Getting the response is very important. Only after we get the response can we extract the content of the website. When necessary, we need to obtain the cookie through the login URL to simulate the login operation. This is what we call the requirement. Data content, there is a lot of content in a URL and it is complex. We need to get the information we need. There are three main methods I currently use: re (regular expression) xpath and bs.4

4. Save

The last step is to save the data we have obtained so that we can check it at any time. Generally, there are folders, text documents, databases, tables, etc.

By simply The basic framework of a Python crawler can be implemented in four steps. Therefore, if you are new to learning Python, it is recommended to learn the crawler direction.

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