[Tilecache] Module imports an ancestor module

[János Gonzales]

Hello,
I'm using TileCache 1.9 and it seems to be working fine. But, in my
Apache Log I have the following errors when getting tiles:

[Fri Nov 23 15:51:20 2007] [warn] mod_python (pid=4716,
interpreter='r88'): Module imports an ancestor module. This may cause
problems. Please check code. File doing import is
"C:\\Website\\tilecache-1.9\\TileCache\\Layer.py".

How do I get rid of this error?

I'm not a python programmer, but Layer.py seems to import these modules :

from warnings import warn
from Client import WMS
from Service import TileCacheException


I'm running python 2.5.1, modpython 3.3.1, and apache 2 on an XP box