Import mechanism to support multiple Python versions

[Nicolas Fleury]

Hi,
	I'm trying to support two Python versions at the same time and I'm 
trying to find effective mechanisms to support modules compiled in C++ 
transparently.

All my code in under a single package.  Is it possible to override the 
import mechanism only for modules under that package and sub-packages so 
that?:

import cppmymodule

would be equivalent to:

if sys.version == "2.4":
     import cppmymodule24 as cppmymodule
elif sys.version == "2.3":
     import cppmymodule23 as cppmymodule

for all modules under the package and all modules with names beginning 
with cpp (or another way to identify them).


I have also third party packages.  Is it possible to make a package 
point to another folder?  For example:

psyco23/...
psyco24/...
psyco/__init__.py  => points to psyco23 or psyco24 depending on Python 
version used.

Note that I cannot use .pth files or symbolic links, since I would want 
the exact same code hierarchy to work with both Python 2.3 and 2.4.

Any help appreciated.
Thx and regards,
Nicolas