On Fri, Jul 7, 2017 at 6:58 PM, Marko Rauhamaa <ma...@pacujo.net> wrote: > Steve D'Aprano <steve+pyt...@pearwood.info>: > >> But the Python virtual machine doesn't require objects to have an >> address at all. > > That's an interesting question. Is it possible to define formal > semantics for Python without the notion of an address (under some name)? > Ultimately it seems necessary to have an enumerable set (address space) > that maps to objects.
Yes, it most definitely is. I have explained Python's object model on the kitchen table, using sheets of paper, and pencil lines/arrows representing references. Aside from being tedious, and being vulnerable to an accidental brush of the sleeve, this is a fully compliant Python interpreter. (And when we were done, the entire heap was garbage collected simultaneously.) ChrisA -- https://mail.python.org/mailman/listinfo/python-list
