[Pyparsing] keepOriginalText problem

[stefaan <Ste...@gm...>]

Hello,

I have a problem with keepOriginalText: when I try to parse a grammar using the
keepOriginalText parse action inside a cherrypy 2.2.1-based web application, the
getTokensEndLoc() fails and I get a traceback:

File "C:\shi\webapp\comparefiles\comparefiles.py", line 273, in doCompare
    NormalDiffParser.remove_lines.parseString("< line 1" + os.linesep + "< line
2" + os.linesep)
  File "C:\shi\webapp\comparefiles\diffparser\pyparsing.py", line 981, in
parseString
    loc, tokens = self._parse( instring, 0 )
  File "C:\shi\webapp\comparefiles\diffparser\pyparsing.py", line 886, in
_parseNoCache
    tokens = fn( instring, tokensStart, retTokens )
  File "C:\shi\webapp\comparefiles\diffparser\pyparsing.py", line 3156, in
keepOriginalText
    endloc = getTokensEndLoc()
  File "C:\shi\webapp\comparefiles\diffparser\pyparsing.py", line 3167, in
getTokensEndLoc
    fstack = inspect.stack()
  File "D:\Python24\lib\inspect.py", line 819, in stack
    return getouterframes(sys._getframe(1), context)
  File "D:\Python24\lib\inspect.py", line 800, in getouterframes
    framelist.append((frame,) + getframeinfo(frame, context))
  File "D:\Python24\lib\inspect.py", line 769, in getframeinfo
    raise TypeError('arg is not a frame or traceback object')
TypeError: arg is not a frame or traceback object

The grammar for remove_lines:

import pyparsing as 
remove_line = p.lineStart + p.Literal("<").suppress() + \
p.restOfLine.setResultsName("LineContents") + p.lineEnd
remove_lines = p.Combine(p.OneOrMore(remove_line))
remove_lines.setParseAction(p.keepOriginalText)


The same program, with the same input, works flawlessly in a "normal" (i.e. not
webapplication) script.