On Mon, 2018-05-07 at 10:52 -0700, Guido van Rossum wrote: > On Mon, May 7, 2018 at 6:24 AM, Serhiy Storchaka <storch...@gmail.com > > wrote: > > I just don't understand why you need a new keyword for writing > > runtime checks. > > Oh, that's pretty clear. The OP wants to be able to turn these checks > off with some flag he can set/clear at runtime, and when it's off he > doesn't want to incur the overhead of evaluating the check. The > assert statement has the latter property, but you have to use -O to > turn it off. He basically wants a macro so that > > runtime_assert(<expr>) > > expands to > > if <controlling flag> and (<expr>): > raise AssertionError > > In Lisp this would be easy. :-)
and he already has a diff ready for review if needed (basically very similar to the current 'assert' implementation :) _______________________________________________ Python-ideas mailing list Python-ideas@python.org https://mail.python.org/mailman/listinfo/python-ideas Code of Conduct: http://python.org/psf/codeofconduct/
