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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def __set_dir_properties(self):
 """ Automatically generate the properties for directories. """

        directories = [
            ("home", "The ROUGE home directory."),
            ("data", "The path of the ROUGE 'data' directory."),
            ("system", "Path of the directory containing system summaries."),
            ("model", "Path of the directory containing model summaries."),
            ]
        for (dirname, docstring) in directories:
            self.__create_dir_property(dirname, docstring)