C:\Python25>python.exe lol\lol.py
yacc: Generating LALR parsing table...
lol> HAI
lol> VISIBLE HOW ARE YOU?
lol> KTHXBYE
lol> NO MOAR
Syntax error at token ID
Traceback (most recent call last):
  File "lol\lol.py", line 72, in <module>
    _main()
  File "lol\lol.py", line 67, in _main
    _parse_and_evaluate(s, options)
  File "lol\lol.py", line 27, in _parse_and_evaluate
    parse_tree = parse(s)
  File "C:\Python25\lol\lol_parser.py", line 208, in parse
    tree = yacc.parse(normalize(s))
  File "C:\Python25\lib\ply\yacc.py", line 303, in parse
    p.func(pslice)
  File "C:\Python25\lol\lol_parser.py", line 150, in p_identifier
    p[0] = (getVariable, p[1])
  File "C:\Python25\lib\ply\yacc.py", line 121, in __getitem__
    if n >= 0: return self.slice[n].value
IndexError: list index out of range