The *re* module is a black swan, because most of stdlib raises exceptions on invalid arguments or not being able to deliver.
It's impossible to change *re* now, so wrapping the calls should be the right solution. -- Juancarlo Añez mailto:apal...@gmail.com On Sun, Oct 22, 2023 at 5:19 AM Stephen J. Turnbull < turnbull.stephen...@u.tsukuba.ac.jp> wrote: > Chris Angelico writes: > > > Why create a new argument, then mandate that you use it everywhere, > > just to achieve what's already happening? > > "Newbies don't read code backwards very well" seems to be the > point. > > While I'm not of the school that "I learned this painfully, so newbies > should learn this painfully", I do think that novice Python > programmers should learn that > > 1. "None has no .xxx attribute" means that some previous code (often > but not always a regex match) was unable to perform some task > and returned None to indicate failure. > 2. If the failure was expectable, your code is buggy because it > didn't test for None, and if it was unexpected, some code > somewhere is buggy because it allowed an invariant to fail. > > On the cost side, there are so many cases where a more finely divided > Exception hierarchy would help novices quite a bit but experts very > little that this case (easy to learn) would open the floodgates. I > believe Guido has specifically advised against such a hierarchy. I'm > against this change. > > Steve > _______________________________________________ > 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/MIE4OFPAG5CTNMUR7FYJSX66UMDHIH57/ > Code of Conduct: http://python.org/psf/codeofconduct/ >
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