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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 _get_filename_path(self, path):

 """ Helper function for creating filename without file extension
 """

        feature_filename = os.path.join(path, self.feature_type.value)

        if self.feature_name is not None:
            feature_filename = os.path.join(feature_filename, self.feature_name)

        return feature_filename