Understanding .pth in site-packages

[Josh English]

(This may be a shortened double post)

I have a development version of a library in c:\dev\XmlDB\xmldb

After testing the setup script I also have c:\python27\lib\site-packages\xmldb

Now I'm continuing to develop it and simultaneously building an application with it.

I thought I could plug into my site-packages directory a file called xmldb.pth with:

c:\dev\XmlDB\xmldb

which should redirect import statements to the development version of the library.

This doesn't seem to work.

Is there a better way to redirect import statements without messing with the system path or the PYTHONPATH variable?

Josh