On Fri, Jun 18, 2021 at 12:43 AM Wes Turner <wes.tur...@gmail.com> wrote: > > > What would be the advantage of such a declaration? > > Constants don't need to be locked or unlocked; which is advantageous for > parallelism and reasoning about program correctness. > True consts (wherein everything referred to in that object is 'frozen' and > immutable or at least only modifiable with e.g. copy-on-write) > wouldn't require locks, > which would be post-GIL advantageous. >
That only works if you have a garbage collector that doesn't depend on reference counts (as CPython's does). Otherwise, you still need to modify the object, in a trivial sense, every time a reference is added or removed. ChrisA _______________________________________________ Python-ideas mailing list -- python-ideas@python.org To unsubscribe send an email to python-ideas-le...@python.org https://mail.python.org/mailman3/lists/python-ideas.python.org/ Message archived at https://mail.python.org/archives/list/python-ideas@python.org/message/BZ5WQZP5BSJEO3FY2H4DK4RLDHZBOO3M/ Code of Conduct: http://python.org/psf/codeofconduct/
