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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 load_files(self, path):
 """ Loads files in a given path and all its subdirectories """


        if self.verbose == 2:
            print("Indexing {}".format(path))

        for filename in os.listdir(path):

            file_path = path + "/" + filename

            if os.path.isdir(file_path):
                self.load_files(file_path)
            elif filename.endswith(".yaml") or filename.endswith(".yml"):
                self.unfold_yaml(file_path)