On Sun, Sep 4, 2016 at 1:52 PM, Mark Shannon <m...@hotpy.org> wrote: [...] > > The key difference is in placement. > PEP 484 style > variable = value # annotation > > Which reads to me as if the annotation refers to the value. > PEP 526 > variable: annotation = value > > Which reads very much as if the annotation refers to the variable. > That is a change in terms of semantics and a change for the worse, in terms > of expressibility. >
You have probably noticed this already, but in the semantics which I have now explained more precisely on python-ideas https://mail.python.org/pipermail/python-ideas/2016-September/042076.html an annotation like variable: annotation = value is a little closer to an expression annotation. I.e. it does not say that 'variable' should *always* have the type given by 'annotation'. -- Koos > > Cheers, > Mark. > > _______________________________________________ > Python-Dev mailing list > Python-Dev@python.org > https://mail.python.org/mailman/listinfo/python-dev > Unsubscribe: > https://mail.python.org/mailman/options/python-dev/k7hoven%40gmail.com -- + Koos Zevenhoven + http://twitter.com/k7hoven + _______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
