[Pyparsing] How can I gruop this?

[Mario R. O. <nim...@gm...>]

In the following definition; is there any way to obtain the amounts,
dates and references grouped in a list or dictionary?
I tried Group() and it doesn't work,

single = StringStart() +\
         delimitedList(Amount('amount') +\
                       Optional(Date)('date') +\
                       Optional(QuotedString(quoteChar="'"))('reference')) +\
         journalName('journalName') +\
         Optional(Comments)('comments') +\
         StringEnd()