[Python-Dev] transitioning from % to {} formatting
Vinay Sajip
vinay_sajip at yahoo.co.uk
Thu Oct 1 08:59:40 CEST 2009
Vinay Sajip <vinay_sajip <at> yahoo.co.uk> writes:
> #Just typing this in, it's not tested or anything
> class DollarMessage:
> def __init__(self, fmt, *args, **kwargs):
> self.fmt = fmt
> self.args = args
> self.kwargs = kwargs
>
> def __str__(self):
> return string.Template(self.fmt).substitute(*args, **kwargs)
>
Whoops, sorry, pressed the "post" button by accident on my previous post. The
above substitute call should of course say
string.Template(self.fmt).substitute(*self.args, **self.kwargs)
and you can alias DollarMessage (or whatever name you choose) as _ or __, say.
As far as the Formatter formatting goes, it's easy enough to subclass Formatter
to format using whatever approach you want.
Regards,
Vinay Sajip
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