1. Understand the Background of the New Language ABC was a teaching language designed specifically for non-professional programmers, but because it was closed, it did not succeed. During Christmas 1989, Guido van Rossum developed a new script interpreter and named it Python, as a kind of successor to the ABC

1. Introduction to Atom Atom is a code editor that supports the three major desktop platforms Windows, Mac, and Linux, is completely free, and is open source on GitHub. Go now 1.1 Pros and Cons Main advantages A strong development and maintenance team, an open source project, fast Bug fixes,

1. Font-family The fonts you can use on a web page are limited to the handful of fonts already installed on the PC the browser is running on. Windows operating system, Chinese fonts: SimHei (Hei) SimSun (Song) NSimSun (New Song) FangSong (FangSong) KaiTi (Kai) FangSongGB2312 (FangSong GB2312) KaiTiGB2312 (Kai GB2312)

1. What Docker Is Docker was born in early 2013 as a side project inside dotCloud (the former name of Docker Inc.). Its source code is hosted on GitHub, it is written in Go, and it follows the Apache 2.0 open-source license. The goal of the Docker project is to provide a lightweight operating system virtualization solution.

1. Introduction to Selenium Selenium is an integration testing tool from Thoughtworks. At its core, Selenium Core is based on JSUnit, written entirely in JavaScript, and can run in any browser that supports JavaScript. 1.1 Main Features and Characteristics Open source and free. Multi-browser support: Firefox, Chrome, IE, Opera — usable for compatibility testing.