class Node:
    def __init__(self, x, y, angle = None, parent = None, action = 0, cost=0):
        self.x = x
        self.y = y
        self.angle = angle
        self.parent = parent
        self.action = action
        self.cost = cost

    def __eq__(self, other):
        if isinstance(other, Node) and (self.x == other.x and self.y == other.y and self.angle == other.angle):
            return True
        else:
            return False