[Python-Dev] PEP 343 - Abstract Block Redux
Josiah Carlson
jcarlson at uci.edu
Sun May 15 17:52:47 CEST 2005
Shane Hathaway <shane at hathawaymix.org> wrote:
>
> Nick Coghlan wrote:
> > That would be good, in my opinion. I updated PEP 3XX to use this idea:
> > http://members.iinet.net.au/~ncoghlan/public/pep-3XX.html
> >
> > With that update (to version 1.6), PEP 3XX is basically PEP 343, but injecting
> > exceptions that occur into the template generator's internal frame instead of
> > invoking next().
> >
> > The rest of the PEP is then about dealing with the implications of allowing
> > yield inside try/finally statements.
>
> You might add to the PEP the following example, which could really
> improve the process of building GUIs in Python:
>
> class MyFrame(Frame):
> def __init__(self):
> with Panel():
> with VerticalBoxSizer():
> self.text = TextEntry()
> self.ok = Button('Ok')
>
> Indentation improves the readability of code that creates a hierarchy.
I've generally been fairly ambiguous about the entire PEP 310/340/343
issue. While resource allocation and release is quite useful, not a
whole heck of a lot of my code has to deal with it.
But after seeing this sketch of an example for its use in GUI
construction; I must have it!
+1 for:
- 'do' keyword (though 'try' being reused scratches the 'no new keyword'
itch for me, and is explicit about "I won't loop")
- PEP 343
- try/finally + @do_template with generators
- Josiah
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