[Zope] strange 'print' behavior in Python Scripts

[Christopher N. Deckard]

Hmmm, ok.  I see your point there.  :-) 

For rapidly throwing something together though, it is easy to triple
quote things and get it to work and then do it right.  Guess I could
have just used DTML and change the content type.

Again, thanks for the advice.  I'll try and do better about
seperating the templates out from the logic.

-Chris

Luciano Ramalho wrote:
> 
> I suppose this has to do with the way PythonScripts are interpreted. As
> you may have noticed, Zope prepends a function definition line like "def
> your_id(args...):" to the text of your PythonScript before evaluating it
> (that is why errors in PythonScripts are reported with the line count
> off by one).
> 
> In order to make the whole block syntatically valid, the body of the
> function must be indented relative to the function definition. So before
> evaluating your function, Zope must prepend a space in each line. It
> should be smart enough to treat triple-quotes differently, but it isn't.
> 
> Now, I think the need to use triple-quoted strings can imply a design
> problem: it means you are embedding the template in your code, which is
> often a bad idea. Without knowing what you are doing, I would try and
> separate the embedded template from the Python logic.
> 
> Regards,
> 
> Luciano
> 
> "Christopher N. Deckard" wrote:
> >
> > > From: "Christopher N. Deckard" <cnd@ecn.purdue.edu>
> > > > Clarification, this happens when using triple quotes
> > > >
> > > > print '''
> > > > foo
> > > > bar
> > > > '''
> > > >
> > > > Actually prints:
> > > >  foo
> > > >  bar
> > >
> > > Ah, I knew this would bite somebody someday, but you're the first to
> > > mention it.  When a Script is compiled, it is actually converted into a
> > > function by prefixing it with a "def f(params..." line.  If the body
> > > isn't indented, it won't compile, so it indents it one space.  You can
> > > get around this by manually indenting.  In other words:
> > >
> > >     ## Script (Python) "indented"
> > >     print '''
> > > foo
> > > bar
> > > '''
> > >     return printed
> >
> > Hmm, this was not the answer I was looking for.  Are there any
> > thoughts on fixing this in the future?  I've fun into it many times
> > now and couldn't figure out what was going on.  It is especially bad
> > when printing a textarea for a form.  Everything comes out indented
> > a space.
> >
> > I'll just go line by line for now.  Thanks for the answer.
> >
> > -Chris
> >
> > _______________________________________________
> > Zope maillist  -  Zope@zope.org
> > http://lists.zope.org/mailman/listinfo/zope
> > **   No cross posts or HTML encoding!  **
> > (Related lists -
> >  http://lists.zope.org/mailman/listinfo/zope-announce
> >  http://lists.zope.org/mailman/listinfo/zope-dev )
> 
> _______________________________________________
> Zope maillist  -  Zope@zope.org
> http://lists.zope.org/mailman/listinfo/zope
> **   No cross posts or HTML encoding!  **
> (Related lists -
>  http://lists.zope.org/mailman/listinfo/zope-announce
>  http://lists.zope.org/mailman/listinfo/zope-dev )