Preventing modules to be read from current working directory

[ssjassal at gmail.com]

Is there a way to instruct Python to import modules from standard
library even if there is one with the same name in the current working
directory? I was trying to import BaseHTTPServer.py from standard
library but was prevented by a python file with the same name in
current working directory (but there was no __init__.py). Can I use
some warning switch to print a warning on stdout?

Thanks,
Sunpreet.