There are 2 interesting aspects from Luis's  blogger post:

- to use with, classes need to consider contexts;
- the (to me, at least) interesting example of ASP.NET's xmlwriter class
(generating SVG dynamically) is... .NET specific;  I'm off busy looking for
a python portable idiom to use in place of his last example...

On Mon, Jul 13, 2009 at 3:43 PM, mdipierro <mdipie...@cs.depaul.edu> wrote:

>
> interesting.
>
> On Jul 13, 1:52 pm, Yarko Tymciurak <yark...@gmail.com> wrote:
> > On Mon, Jul 13, 2009 at 11:25 AM, mdipierro <mdipie...@cs.depaul.edu>
> wrote:
> >
> > > Functionally you can achieve the same, as you know, with
> >
> > > FORM(
> > >    DIV(
> > >        INPUT(_type='submit') ,
> > >        _class='test'),
> > >    _action='',_method='post')
> >
> > > Syntactically I do not think it is possible to implement the syntax
> > > you suggest because there is no "with" in Python.
> >
> > Actually, there is:  PEP 343 introduced it.  As of Python 2.5, it's
> > available with:
> >
> > from __future__ import with_statement;
> >
> > As of Python 2.6 "with" and "as" are always keywords.
> >
> > Check out  *Writing Context
> > Managers*<
> http://docs.python.org/3.0/whatsnew/2.6.html#new-26-context-managers>and
> > *The contextlib
> > module*<
> http://docs.python.org/3.0/whatsnew/2.6.html#new-module-contextlib>
> > .
> >
> > - Yarko
> >
> >
> >
> > > Massimo
> >
> > > On Jul 13, 11:12 am, "mr.freeze" <nat...@freezable.com> wrote:
> > > > I'm a .net developer by trade.  I embed IronPython into a lot of my
> > > > apps.  One nice thing I can do with it is build XML using the 'with'
> > > > statement.
> > >http://langexplr.blogspot.com/2009/02/writing-xml-with-ironpython-xml.
> ..
> >
> > > > How hard would this be to implement a similar context protocol for
> > > > web2py's HTML helpers?  This is what I am picturing:
> >
> > > > with FORM(_action='',_method='post'):
> > > >     with DIV(_class='test'):
> > > >         INPUT(_type='submit')
> >
> > > > Would produce this:
> >
> > > > <form enctype="multipart/form-data" action="" method="post">
> > > >   <div class="test">
> > > >     <input type="submit" />
> > > >   </div>
> > > > </form>
> >
>

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