[Tutor] string.Template

[Prasad, Ramit]

Albert-Jan Roskam wrote:
> > On 24/04/13 00:14, Albert-Jan Roskam wrote:
> >>  Hello,
> >>
> >>  Is there a better, *built-in* alternative for the code below? The recursion
> > works,
> >>  but it feels like reinventing the wheel.
> >
> > What makes you think it is reinventing the wheel?
> 
> Hi Steven,
> 
> Well, using a template they way I am doing seems a very common thing to do to me. So I thought it
> would be part of string.Template or something similar already. Maybe I expected more of
> string.Template after having read a little about Django's template system for the past days. ;-) This
> version does not require the string module, and it's not less readable IMHO:
> 
> def translate(template, args):
>     """Recursively %-substitute <template> using <args> as a replacement"""
>     syntax = template % args
>     if "%" in syntax:
>         return translate(syntax, args)
>     return syntax

Just a side note, if you ever need to have a string with "%" in it, this will
recurse infinitely (or rather until Python throws an exception).

t = "Monty Python is #@!#%% %(status)s"
translate(t, {'status': 'awesome!'})


~Ramit

 
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