Feb-16-2019, 05:02 PM
I wasn't familiar before with these magic methods but here's what I learned...
You've constructed Integer such that in Point, when self.x and self.y are assigned (or "__set__"), that the TypeError-raising code gets called. Merely constructing an integer directly only invokes its initializer, not its __set__ method. So this code appears to be working as it ought to. (I'm not as sure about __get__ or __delete__, but that's not what your question seems to be about.)
You've constructed Integer such that in Point, when self.x and self.y are assigned (or "__set__"), that the TypeError-raising code gets called. Merely constructing an integer directly only invokes its initializer, not its __set__ method. So this code appears to be working as it ought to. (I'm not as sure about __get__ or __delete__, but that's not what your question seems to be about.)
