class Building:
    def __init__(self, south, west, width_WE, width_NS, height=10):
        self.x = west
        self.y = south
        self.width = width_WE
        self.height = width_NS
        self.depth = height

    def corners(self):
        return {
            "south-west": [self.y, self.x],
            "south-east": [self.y, self.x + self.width],
            "north-west": [self.y + self.height, self.x],
            "north-east": [self.y + self.height, self.x + self.width],
        }

    def area(self):
        return self.width * self.height

    def volume(self):
        return self.area() * self.depth

    def __repr__(self):
        return "Building({}, {}, {}, {}, {})".format(
            self.y,
            self.x,
            self.width,
            self.height,
            self.depth
        )


if __name__ == '__main__':
    # These "asserts" using only for self-checking and not necessary for auto-testing
    def json_dict(d):
        return dict((k, list(v)) for k, v in d.items())


    b = Building(1, 2, 2, 3)
    b2 = Building(1, 2, 2, 3, 5)
    assert b.area() == 6, "Area"
    assert b.volume() == 60, "Volume"
    assert b2.volume() == 30, "Volume2"
    assert json_dict(b.corners()) == {'north-east': [4, 4], 'south-east': [1, 4],
                                      'south-west': [1, 2], 'north-west': [4, 2]}, "Corners"

    assert str(b) == "Building(1, 2, 2, 3, 10)", "String"