Larry Hastings wrote: > [...] > > Now comes the one thing that we might call a "trick". The trick: when > we allocate the ForwardClass instance C, we make it as big as a class > object can ever get. (Mark Shannon assures me this is simply "heap > type", and he knows far more about CPython internals than I ever will.)
It's possible that I'm misunderstanding the allocation mechanism (and it sounds like you've discussed it with people that know a lot more about the internals than me), but if C is an instance of the metaclass then surely you have to know the metaclass to know this. And it looks like the metaclass can definitely be a C type (and thus have a C struct defining an instance). A presumably the metaclass could be a variable size C type (i.e. like tuple), so possibly not even known until the instance is made. David _______________________________________________ Python-Dev mailing list -- python-dev@python.org To unsubscribe send an email to python-dev-le...@python.org https://mail.python.org/mailman3/lists/python-dev.python.org/ Message archived at https://mail.python.org/archives/list/python-dev@python.org/message/Y4DXOFP6CFX3GKPLFP5MYTOEESRSBW7O/ Code of Conduct: http://python.org/psf/codeofconduct/
