"Barry A. Warsaw" wrote:
>
>...
The mapping argument is optional; if it is omitted then the
> mapping is taken from the locals and globals of the context in
> which the .sub() method is executed. For example:
>
> def birth(self, name):
> country = self.countryOfOrigin['name']
> return '${name} was born in ${country}'
>
> birth('Guido')
You forgot the "implicit .sub"() feature.
>...
> - We can simply allow the exception (likely a NameError or
> KeyError) to propagate.
Explicit!
> - We can return the original substitution placeholder unchanged.
Silently guess???
Overall it isn't bad...it's a little weird to have a method that depends
on sys._getframe(1) (or as the say in Tcl-land "upvar"). It may set a
bad precedent...
Paul Prescod
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