From: "Guido van Rossum" <guido@python.org> > > Does this mean this is the wrong route, or is it absolute impossible > > to create a subtype of PyType_Type in C with additional slots? > > I wish I had time to explain this, but I don't. For now, you'll have > to read how types are initialized in typeobject.c -- maybe there's a > way, maybe there isn't. > > > Any tips about the route to take? > > It can be done easily dynamically. > I'm still struggling with this. How can it be done dynamically? My idea would be to realloc() the object after creation, adding a few bytes at the end. The problem is that I don't know how to find out about the object size without knowledge about the internals. The formula given in PEP 253 type->tp_basicsize + nitems * type->tp_itemsize seems not to be valid any more (at least with CYCLE GC). Thomas
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