[Tutor] Regular Expression help - parsing AppleScript Lists as Strings

[Andrew Wu]

Ah - thanks for the correction!  I missed the extra grouping and the
extra spacing ... doh!  Sorry about the HTML-formatted e-mail ...

Thanks also for the pyparsing variant as well - I didn't know the
module existed before!



Andrew

On 11/1/07, Kent Johnson <kent37 at tds.net> wrote:
> Andrew Wu wrote:
>
> >    pattern3 = '''
> >       ^{
> >       (
> >       %s
> >       | {%s}   # Possible to have 1 level of nested lists
> >       ,?)*     # Items are comma-delimited, except for the last item
> >       }$
> >    ''' % (pattern2, pattern2)
>
> The above doesn't allow comma after the first instance of pattern2 and
> it doesn't allow space after either instance. Here is a version that
> passes your tests:
>
>     pattern3 = '''
>        ^{
>        (
>        (%s
>        | {%s})   # Possible to have 1 level of nested lists
>        ,?\s*)*     # Items are comma-delimited, except for the last item
>        }$
>     ''' % (pattern2, pattern2)
>
> You might want to look at doing this with pyparsing, I think it will
> make it easier to get the data out vs just recognizing the correct pattern.
>
> Kent
>
> PS Please post in plain text, not HTML.
>