If there is no sub-package under this package, then the package folder will also be removed.
如果这个包下没有子包，那么这个包文件夹也将被去除。
The py.test command descends into every directory and sub-directory in your project, whether a directory looks like a Python package or not.
test命令向下递归地搜索项目的每个目录和子目录，无论目录是否是Python 包。
Another example of a requirement acting as a package for other requirements is the requirement Core Functions, which contains two sub-requirements.
另一个封装其他需求的例子是CoreFunctions，它包含了两个子需求。
Another example of a requirement acting as a package for other requirements is the requirement Core Functions, which contains two sub-requirements.
另一个封装其他需求的例子是CoreFunctions，它包含了两个子需求。
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