On Sunday, January 12, 2014 3:08:31 PM UTC, Eric S. Johansson wrote:
> As part of speech recognition accessibility tools that I'm building, I'm
>
> using string.Template. In order to construct on-the-fly grammar, I need
>
> to know all of the identifiers before the template is filled in. what is
>
> the best way to do this?
>
Try this:
import string
cmplxstr="""a simple $string a longer $string a $last line ${another} one"""
def finditer(s):
for match in string.Template.pattern.finditer(s):
arg = match.group('braced') or match.group('named')
if arg:
yield arg
if __name__ == '__main__':
print set(finditer(cmplxstr))
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