class Station:
    __slots__ = ("matricule", "x", "y", "z", "hi", "v0")

    def __init__(self, matricule: str):
        """Constructor
        :param matricule: station name
        """
        self.matricule = matricule
        self.x = None
        self.y = None
        self.z = None
        self.hi = None
        self.v0 = None
