oivvio polite writes:

... import testmodule ... Error Type: ImportError Error Value: No module named testmodule

The module testmodule is in the site-packages of my python installation. and importing it from any normal python program is no problem. Zope's startup script sometimes defines "PYTHONHOME". The result could be that Zope looks at a different place for "site-packages" than you expect.

Dieter