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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 *
+import pprint
+
+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))") )
+