I just did. And either a) I'm doing something terribly wrong or b) ctypes.Structure is slower than Python class with __slots__. I would bet on a) - I've never

I just did. And either a) I'm doing something terribly wrong or b) ctypes.Structure is slower than Python class with __slots__. I would bet on a) - I've never worked with ctypes before. EDIT: I bet on a) and I was wrong: ctypes offers no speed advantage.