Method __init__

example_code/item_063.py:155–159

(self, x, y, z)

print("Example 9")
class Point3D(BetterSerializable):
    def __init__(self, x, y, z):
        super().__init__(x, y, z)
        self.x = x
        self.y = y
        self.z = z

# Forgot to call register_class! Whoops!