在Python中，可通过help ()函数、dir ()函数或访问官方文档查看模块和函数的使用方法。了解模块包含哪些函数及其用法至关重要，若不知如何查阅文档，学习Python将变得困难许多。

1、 启动Python开发工具IDLE，创建名为pkg.py和init.py的两个文件，并将它们保存在同一个名为mypkg的文件夹中。 4、 运行diaopkg.py程序后，成功调用了mypkg文件夹中pkg模块的test方法。由于该文件夹内包含__init__.py文件，因此被视为一个有效的Python包，实现了模块的正确导入与执行。

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