This document is python learning notes and concise tutorial; why use Python as an introductory programming language? Every language has its supporters and detractors. Go to Google "why python" and you will get a lot of results, such as wide range of applications, open source, active community, rich libraries, cross-platform, etc. You may also find a lot of criticisms about it, such as rigid format and low efficiency. , there are very few people using it in China. However, the weighing of these advantages and disadvantages is a worry for programmers. As a beginner who wants to learn some programming, simplicity is the most important thing. While students who are learning C++ are still writing linked lists, and those who are learning Java are still fiddling with the running environment, those of you who are learning Python are already flying into the sky like the picture above. Interested friends can come and take a look