On Sat, Aug 12, 2017 at 10:56 PM, Nick Coghlan <ncogh...@gmail.com> wrote: [..] > As Nathaniel suggestion, getting/setting/deleting individual items in > the current context would be implemented as methods on the ContextItem > objects, allowing the return value of "get_context_items" to be a > plain dictionary, rather than a special type that directly supported > updates to the underlying context.
The current PEP 550 design returns a "snapshot" of the current EC with sys.get_execution_context(). I.e. if you do ec = sys.get_execution_context() ec['a'] = 'b' # sys.get_execution_context_item('a') will return None You did get a snapshot and you modified it -- but your modifications are not visible anywhere. You can run a function in that modified EC with `ec.run(function)` and that function will see that new 'a' key, but that's it. There's no "magical" updates to the underlying context. Yury _______________________________________________ Python-ideas mailing list Python-ideas@python.org https://mail.python.org/mailman/listinfo/python-ideas Code of Conduct: http://python.org/psf/codeofconduct/