On 1/29/07, iain duncan <[EMAIL PROTECTED]> wrote:
>
> On Mon, 2007-29-01 at 05:54 -0800, Joseph Tate wrote:
> >
> > iain duncan wrote:
> > > Hi folks, I found this handy cheat on line to make do without ternary
> > > operators until py 2.5 is readily available on commodity hosting:
> > >
> > > ( answer1, answer2 )[ boolean_condition ]
> > > - evaluates to answer2 if boolean_condition true, else answer1
> >
> > I always use (boolean_condition and answer1 or answer2). I.e. for
> > py:attrs="{'checked': value==7 and 'checked' or None}" for your
> > checkboxes.
> >
> > > The <= makes kid choke on a bad tag. Seems to me kid should recognize
> > > that <>'s inside a py expression should be ignored. Which if does for >=
> > > but *not* <=.
> > >
> > > The bottom of the traceback I get is:
> > >
> > > File "/usr/lib/python2.4/site-packages/kid-0.9.3-py2.4.egg/kid/pull.py",
> > > line 414, in feed
> > > raise e
> > > ExpatError: not well-formed (invalid token): line 77, column 81
> > >
> >
> > use < as your <, or reverse the operators and make it so it's
> > always doing a greater than operation. This is even more fun when
> > you're dealing with javascript less than operations.
>
> So if I use < in the python expression, that gets converted *before*
> the python code runs?
It doesn't get "converted"... that's just how XML works. Kid templates
are valid XML documents and are parsed as such.
-bob
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