* PEP 697: Changes based on initial implementation & docs
- Use a flag, `Py_TPFLAGS_ITEMS_AT_END`, rather than a slot. This way the subclass doesn't need to worry about items (if the superclass is set up right).
- The result of `PyObject_GetTypeDataSize` may be higher than requested by -basicsize (e.g. due to alignment). It is safe to use all of it (e.g. with memset).
- Mention that `basicsize == 0` and `itemsize == 0` already work. I’ll add explicit docs & tests though.
- Add link to initial implementation
- Add endorsements
- Add a “big picture” decision tree
- Rewording
- Mention possible flags for alternative item layouts
* Apply suggestions from code review
Co-authored-by: C.A.M. Gerlach <CAM.Gerlach@Gerlach.CAM>
Petr Viktorin