[Python-Dev] Set the namespace free!

[岳帅杰]

>
> !for boo in foo:

   !if boo is !None:

       !print(hoo)

   !else:

       !return !sorted(woo)

I feel most people could not bear such a difficult syntax. Why have I to
type so much '!'s ?


On Thu, Jul 22, 2010 at 10:04 PM, Bartosz Tarnowski <
bartosz-tarnowski at zlotniki.pl> wrote:

>
> Hello, guys.
>
> Python has more and more reserved words over time. It becomes quite
> annoying, since you can not use variables and attributes of such names.
> Suppose I want to make an XML parser that reads a document and returns an
> object with attributes corresponding to XML element attributes:
>
> > elem = parse_xml("<element param='boo'/>")
> > print elem.param
> boo
>
> What should I do then, when the attribute is a reserver word? I could use
> trailing underscore, but this is quite ugly and introduces ambiguity.
>
> > elem = parse_xml("<element for='each'/>")
> > print elem.for_ #?????
> > elem = parse_xml("<element for_='each'/>")
> > print elem.for__ #?????
>
> My proposal: let's make a syntax change.
>
> Let all reserved words be preceded with some symbol, i.e. "!" (exclamation
> mark). This goes also for standard library global identifiers.
>
> !for boo in foo:
>    !if boo is !None:
>        !print(hoo)
>    !else:
>        !return !sorted(woo)
>
>
> This would allow the user to declare any identifier with any name:
>
> for = with(return) + try
>
> What do you think of it? It is a major change, but I think Python needs it.
>
> --
> haael
>
> _______________________________________________
> Python-Dev mailing list
> Python-Dev at python.org
> http://mail.python.org/mailman/listinfo/python-dev
> Unsubscribe:
> http://mail.python.org/mailman/options/python-dev/ysj.ray%2Bpython-dev%40gmail.com
>



-- 
Ray Allen
Best wishes!
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-dev/attachments/20100722/57e8b817/attachment.html>