C:\>c:\python23\python
Python 2.3a1 (#38, Dec 31 2002, 17:53:59) [MSC 
v.1200 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more 
information.
>>> import parser
>>> a = file('c:\\python23\\lib\\base64.py').read()
>>> b = parser.suite(a)
>>> c = parser.ast2tuple(b)
>>> d = parser.sequence2ast(c)
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
parser.ParserError: VALIDATION FAILURE: report this 
to the maintainer!
>>> ^Z


C:\>

Problem also occurred on Python 2.2.2 on WinXP and 
RedHat 7.3