Fails with the following traceback:

C:\Python23\Lib\site-packages\roundup>python demo.py
Traceback (most recent call last):
  File "demo.py", line 15, in ?
    from roundup.scripts import roundup_server
  File
"C:\Python23\Lib\site-packages\roundup\scripts\roundup_server.py",
line 3
2, in ?
    from roundup.cgi import cgitb, client
  File
"C:\Python23\Lib\site-packages\roundup\cgi\cgitb.py",
line 10, in ?
    import sys, os, types, string, keyword, linecache,
tokenize, inspect, cgi
  File "C:\Python23\lib\tokenize.py", line 38, in ?
    COMMENT = N_TOKENS
NameError: name 'N_TOKENS' is not defined