On 4 July 2017 at 09:46, Greg Ewing <greg.ew...@canterbury.ac.nz> wrote: > Paul Moore wrote: >> >> As noted, I disagree that people are not passing components because >> str(e) displays them the way it does. But we're both just guessing at >> people's motivations, so there's little point in speculating. > > > I've no doubt that the current situation encourages people > to be lazy -- I know, because I'm guilty of it myself! > > Writing a few extra lines to store attributes away and format > them in __str__ might not seem like much, but in most cases > those lines are of no direct benefit to the person writing > the code, so there's little motivation to do it right.
So isn't this a variant of the argument that defining well-behaved classes currently involves writing too much boilerplate code, and the fact that non-structured exceptions are significantly easier to define than structured ones is just an example of that more general problem? I personally don't think there's anything all *that* special about exceptions in this case - they're just a common example of something that would be better handled as a "data record" type, but is commonly handled as an opaque string because they're so much easier to define that way. Cheers, Nick. -- Nick Coghlan | ncogh...@gmail.com | Brisbane, Australia _______________________________________________ Python-ideas mailing list Python-ideas@python.org https://mail.python.org/mailman/listinfo/python-ideas Code of Conduct: http://python.org/psf/codeofconduct/
