""" May be necessary """

# from sklearn.neighbors.dist_metrics import EuclideanDistance, SEuclideanDistance, M
#
#
#
# ######################################################################
# # metric mappings
# #  These map from metric id strings to class names
# METRIC_MAPPING = {'euclidean': EuclideanDistance,
#                   'l2': EuclideanDistance,
#                   'minkowski': MinkowskiDistance,
#                   'p': MinkowskiDistance,
#                   'manhattan': ManhattanDistance,
#                   'cityblock': ManhattanDistance,
#                   'l1': ManhattanDistance,
#                   'chebyshev': ChebyshevDistance,
#                   'infinity': ChebyshevDistance,
#                   'seuclidean': SEuclideanDistance,
#                   'mahalanobis': MahalanobisDistance,
#                   'wminkowski': WMinkowskiDistance,
#                   'hamming': HammingDistance,
#                   'canberra': CanberraDistance,
#                   'braycurtis': BrayCurtisDistance,
#                   'matching': MatchingDistance,
#                   'jaccard': JaccardDistance,
#                   'dice': DiceDistance,
#                   'kulsinski': KulsinskiDistance,
#                   'rogerstanimoto': RogersTanimotoDistance,
#                   'russellrao': RussellRaoDistance,
#                   'sokalmichener': SokalMichenerDistance,
#                   'sokalsneath': SokalSneathDistance,
#                   'haversine': HaversineDistance,
#                   'pyfunc': PyFuncDistance}
