说明：  它非常适合初学者学习python，一个简单易懂的例子，让初学者可以快速学会猜数的小游戏，便于学习者快速掌握python的语法和结构。
(It is very suitable for beginners to learn python, a simple and easy to understand example, so that beginners can quickly learn to guess the number of small games, easy for learners to quickly master Python syntax and structure.)