[Python-ideas] Extension of python/json syntax to support explicitly sets and ordered dict.

[Matteo Nastasi]

I was thinking about an extended json too, not just python syntax.

What do you think about it ?

Regards and thank you for your time.

  Matteo.

On Thu, Sep 07, 2017 at 09:54:15PM +1000, Steven D'Aprano wrote:
> On Thu, Sep 07, 2017 at 01:36:31PM +0200, Matteo Nastasi wrote:
> 
> > A set could be defined as { item1, item2, item3[...] }
> 
> Guido's time machine strikes again. Python 3:
> 
> py> s = {1, 2, 3}
> py> type(s)
> <class 'set'>
> 
> 
> >     with {,} as an empty set
> 
> That looks like a typo. I don't think that having a literal for empty 
> sets is important enough that we need worry about the lack.
> 
> 
> > An ordered dict could be defined as [ item1: value1, item2: value2 ... ]
> >     with [:] ase an empty odered dict
> 
> I think that's been proposed before.
> 
> I don't hate that suggestion, but I don't think its very useful either. 
> We already have a de facto "Ordered Mapping" literal that can be passed 
> to the OrderedDict constructor:
> 
> OrderedDict(
>     [(key1, value1), (key2, value2), (key3, value3), ...]
>     )
> 
> Its not quite as compact, but it isn't too awful. And if you really 
> don't like it, try:
> 
> OrderedDict(zip(keys, values))
> 
> 
> 
> -- 
> Steven
> _______________________________________________
> Python-ideas mailing list
> Python-ideas at python.org
> https://mail.python.org/mailman/listinfo/python-ideas
> Code of Conduct: http://python.org/psf/codeofconduct/
> 

-- 
  email:   nastasi at alternativeoutput.it,   matteo.nastasi at gmail.com
  web:   www.alternativeoutput.it   irc: #linux-mi at irc.freenode.net
                 linkedin: http://lnkd.in/SPQG87