Home Original page

[Python-Dev] Python 3.6 dict becomes compact and gets a private version; and keywords become ordered

Sven R. Kunze srkunze at mail.de
Tue Sep 13 14:42:08 EDT 2016 
On 13.09.2016 20:21, Tres Seaver wrote:
> *Lots* of library authors have to straddle Python versions: consumers of
> those libraries only get to pick and choose when their code is at the
> "leaf" of the dependency tree (the application).

Maybe, I didn't express myself well but this was not my intended 
question. Using this argument for not driving the evolution of the 
language spec, doesn't seem reasonable. Changes are necessary from time 
to time and this one in particular is not breaking compatibility with 
older versions. So, existing libs are okay. But why shouldn't the 
ordering of dicts not be an advertisable feature for application 
developers or developers of future libs? My reasoning so far is that in 
those circumstances people **won't switch** from CPython 3.6 to Cython 
to PyPy back to CPython 2.7 once a week (drawn from my experience at 
least). But maybe I'm wrong here.

Cheers,
Sven
More information about the Python-Dev mailing list