On Sun, 15 Jan 2023 at 10:32, Jen Kris via Python-list <python-list@python.org> wrote: > The situation I described in my original post is limited to a case such as x > = y ... the assignment can be done simply by "x" taking the pointer to "y" > rather than moving all the data from "y" into the memory buffer for "x" >
It's not simply whether it *can* be done. It, in fact, *MUST* be done that way. The ONLY meaning of "x = y" is that you now have a name "x" which refers to whatever object is currently found under the name "y". This is not an optimization, it is a fundamental of Python's object model. This is true regardless of what kind of object this is; every object must behave this way. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
