目录类和方法的概念和实例 1.python类：class2.类的构造方法__init__()3.类中方法的参数self4.继承5.方法重写类的特殊属性与方法类的私有属性类的私有方法类和方法的概念和实例
I need to: - start / stop sounds with lengths between 0.1 and 10 seconds - change the playback volume I want to / would like to / would be nice to have to:
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