Summary of points to note about Python2.x

Most of the Python tutorials on the Internet are version 2.X. Compared with python3.X, python2.X has changed a lot. Many libraries are used differently. I installed python3.X. Let’s take a look at the details. Example 0x01 I had nothing to do during the Spring Festival (how free I was), so I wrote a simple program to read some jokes and record the process of writing the program. The first time I came into contact with crawlers was when I saw a post like this. It was a funny post about crawling photos of girls on Omelette. It was not very convenient. So I started to imitate cats and tigers and captured some pictures. Technology is inspiring the future. As a programmer, how can you do such a thing? It is better to make jokes that are more beneficial to your physical and mental health. 0x02 Before we roll up our sleeves and get started, let’s popularize some theoretical knowledge. To put it simply, we need to pull down the content at a specific location on the web page. How to pull it down? We must first analyze the web page to see which piece of content we need. For example, this time we crawled the jokes on the hilarious website. When we open the jokes page on the hilarious website, we can see a lot of jokes. Our purpose is to obtain these contents. Come back and calm down after reading it. If you keep laughing like this, we can't write code. In chrome,

1. Python implementation of network subpage crawler case

##Introduction: Most of the Python tutorials on the Internet are version 2.X. Compared with python2.X and python3.X, the changes are relatively large. The usage of many libraries is different. I installed python3.X. Let’s do it. Take a look at the detailed examples

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Introduction: This article mainly introduces the installation of python2.x and python3.x in the Windows (I use Win10) environment, as well as python2.x and python3 Configuration issues when .x coexist.

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Introduction: Detailed explanation of the difference between Python3.x and Python2.x

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Introduction: This article explains in detail how to solve the python2.x default encoding problem

5. Usage of functions map() and reduce() in Python

Introduction: This This article mainly introduces the usage of map() function and reduce() function in Python. The code is based on Python2.x version. Friends in need can refer to it

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# Introduction: This article mainly introduces characters in Python A summary of string formatting methods, mentioning different techniques for different versions of Python 2.x and 3.x. Friends in need can refer to

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Python How to set and use function parameters in Python

# Introduction: This article mainly introduces the function parameters in Python The study notes on setup and use record some differences related to function parameters in Python2.x and Python3.x. Friends in need can refer to

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Linux Installing third-party libraries for different versions of python

Introduction: This article shares with you how the author installs third-party libraries for python2.x and python3.x under Linux. It is very practical. Friends who need it can refer to

9. python3 to make hilarious web page crawlers

Introduction: Most of the Python tutorials on the Internet are version 2.X. Compared with python2.X and python3.X, the changes are relatively large, and the usage of many libraries is different. , I installed python3.

## Introduction: Version 3.0 of Python is often called Python 3000, or Py3k for short. This is a major upgrade compared to earlier versions of Python. In order not to bring too much cumbersomeness, Python 3.0 was not designed with downward compatibility in mind.

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