def update_csv(self, mean_class_dist):
        """
        Update CSV.

        Args:
            mean_class_dist: float, Distance Ratio
        Returns:
            Nothing!
        """
        with open(self.csv_file, "a") as csv_file:
            writer = csv.writer(csv_file, delimiter=",")
            writer.writerow([mean_class_dist])

        Update CSV.

        Args:
            mean_class_dist: float, Distance Ratio
        Returns:
            Nothing!
        
examples/pytorch/hilander/PSS/Smooth_AP/src/evaluate.py