[Pyparsing] Index operator

[Will M. <wil...@gm...>]

Hi,

I have a custom expression evaluator that is working quite well, bit I'd
like to implement an operator that works just like indexing a string or
sequence in python.

i.e. something[<expression>]

I can't quite figure out how to do this. Can anyone give me any pointers?

Thanks,

Will McGugan

-- 
Will McGugan
http://www.willmcgugan.com