I've already proposed something like this a looong time ago and guido even said it is a good idea. I never got around to implementing it. How difficult would be to port this to CPython? The patch seems very concise
On Wed, Sep 28, 2016 at 8:17 AM, Maciej Fijalkowski <fij...@gmail.com> wrote: > On Tue, Sep 27, 2016 at 8:33 PM, Ryan Gonzalez <rym...@gmail.com> wrote: > > Have you considered bringing this up on python-ideas, too? > > python-idea is generally quite a hostile place. That said, if you > think it's worth your effort to submit it there, feel free to do so, > just the core pypy devs feel their time is better spent elsewhere than > arguing on python-ideas > > > > > On Tue, Sep 27, 2016 at 12:19 PM, Carl Friedrich Bolz <cfb...@gmx.de> > wrote: > >> > >> Hi all, > >> > >> I read this paper today about common mistakes that Python beginners > >> make: > >> > >> > >> https://www.researchgate.net/publication/307088989_Some_ > Trouble_with_Transparency_An_Analysis_of_Student_Errors_ > with_Object-oriented_Python > >> > >> The most common one by far is forgetting the "self" parameter in the > >> method definition (which also still happens to me regularly). The error > >> message is not particularly enlightening, if you don't quite understand > >> the explicit self in Python. > >> > >> > >> So I wonder whether we should print a better error message, something > >> like this: > >> > >> $ cat m.py > >> class A(object): > >> def f(x): > >> return self.x > >> A().f(1) > >> > >> $ pypy m.py > >> Traceback (application-level): > >> File "m.py", line 4 in <module> > >> A().f(1) > >> TypeError: f() takes exactly 1 argument (2 given). Did you forget 'self' > >> in the function definition? > >> > >> > >> It's a bit the question how clever we would like this to be to reduce > >> false positives, see the attached patch for a very simple approach. > >> > >> Anyone have opinions? > >> > >> Cheers, > >> > >> Carl Friedrich > >> > >> _______________________________________________ > >> pypy-dev mailing list > >> pypy-dev@python.org > >> https://mail.python.org/mailman/listinfo/pypy-dev > >> > > > > > > > > -- > > Ryan > > [ERROR]: Your autotools build scripts are 200 lines longer than your > > program. Something’s wrong. > > http://kirbyfan64.github.io/ > > > > > > _______________________________________________ > > pypy-dev mailing list > > pypy-dev@python.org > > https://mail.python.org/mailman/listinfo/pypy-dev > > > _______________________________________________ > pypy-dev mailing list > pypy-dev@python.org > https://mail.python.org/mailman/listinfo/pypy-dev > -- Leonardo Santagada
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