[Pyparsing] use of Dict

[June K. <jun...@gm...>]

Hi.

The following code doesn't work:

>>> p=Dict(Keyword("hello")+'abc')+Dict(Keyword("world")+Word(nums))
>>> p.parseString("hello abc world 2134")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "c:\python25\lib\site-packages\pyparsing-1.4.11-py2.5-win32.egg\pyparsing
.py", line 980, in parseString
    loc, tokens = self._parse( instring.expandtabs(), 0 )
  File "c:\python25\lib\site-packages\pyparsing-1.4.11-py2.5-win32.egg\pyparsing
.py", line 860, in _parseNoCache
    loc,tokens = self.parseImpl( instring, preloc, doActions )
  File "c:\python25\lib\site-packages\pyparsing-1.4.11-py2.5-win32.egg\pyparsing
.py", line 2174, in parseImpl
    loc, resultlist = self.exprs[0]._parse( instring, loc, doActions, callPrePar
se=False )
  File "c:\python25\lib\site-packages\pyparsing-1.4.11-py2.5-win32.egg\pyparsing
.py", line 866, in _parseNoCache
    tokens = self.postParse( instring, loc, tokens )
  File "c:\python25\lib\site-packages\pyparsing-1.4.11-py2.5-win32.egg\pyparsing
.py", line 2831, in postParse
    dictvalue = tok.copy() #ParseResults(i)
AttributeError: 'str' object has no attribute 'copy'

If I enclose the expression inside Dict with something like Group, it
works okay. That is,

>>> p=Dict(Group(Keyword("hello")+'abc'))+Dict(Group(Keyword("world")+Word(nums)))
>>> p.parseString("hello abc world 2134")
([(['hello', 'abc'], {}), (['world', '2134'], {})], {'world': [('2134', 1)], 'he
llo': [('abc', 0)]})

Is this intended? I thought Dict should always implicitly mean Group.