Barcode generator for Python?

[jennyw]

Does anyone know of a barcode generator for Python?  I'm looking to do
this on Windows. It would be nice to find something free, but that's not
necessary (so long as it's reasonable).  It doesn't have to be
Python-specific, either, so long as I can call it from Python.  I'd love
to hear any suggestions.

I've seen bookland.py, but the kind of barcodes I'm looking to generate 
are not ISBN barcodes.

Thanks!

Jen