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#
# nested.py
# Copyright, 2007 - Paul McGuire
#
# Simple example of using nestedExpr to define expressions using
# paired delimiters for grouping lists and sublists
#
from pyparsing import *
data = """
{
{ item1 "item with } in it" }
{
{item2a item2b }
{item3}
}
}
"""
# use {}'s for nested lists
nestedItems = nestedExpr("{", "}")
print((nestedItems + stringEnd).parseString(data).asList())
# use default delimiters of ()'s
mathExpr = nestedExpr()
print(mathExpr.parseString("((( ax + by)*C) *(Z | (E^F) & D))"))