Paul McGuire wrote:
> Steven Bethard wrote:
>> Within a larger pyparsing grammar, I have something that looks like::
>>
>> wsj/00/wsj_0003.mrg
>>
>> When parsing this, I'd like to keep around both the full string, and the
>> AAA_NNNN substring of it, so I'd like something like::
>>
>> >>> foo.parseString('wsj/00/wsj_0003.mrg')
>> (['wsj/00/wsj_0003.mrg', 'wsj_0003'], {})
>>
>> How do I go about this? I was using something like::
>>
>> >>> digits = pp.Word(pp.nums)
>> >>> alphas = pp.Word(pp.alphas)
>> >>> wsj_name = pp.Combine(alphas + '_' + digits)
>> >>> wsj_path = pp.Combine(alphas + '/' + digits + '/' + wsj_name +
>> ... '.mrg')
[snip]
> BUT, if all you want is to be able to easily *access*
> that sub-field, then why not give it a results name? Like this:
>
> wsj_name = pp.Combine(alphas + '_' + digits).setResultsName("name")
>
> Leave everything else the same, but now you can access the name field
> independently from the rest of the combined tokens.
Works great. Thanks!
STeVe
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