David Bear writes:

I want to call a python script from a page template but I don't know how to 'name' the script, ie I don't know how acquisition will find it.

my script lives if /folderA/folderB by page templated list is /folderA/folderB/folderC

I use <p tal:content="python:listObjects('departments', 'priority')">content of listObjects </p>

to call the listObjects script in folderB -- but zope isn't finding it.

what simple thing am I missing? You forgot to read the TALES documentation ;-)

There is only a small set of built in variables that can be accessed directly in ZPT-TALES, e.g. "here", "container", "template", "user", ... All other objects must be accessed indirectly via expressions starting in these built in variables. You should be able to access "listObjects" by "container.listObjects". "here.listObjects" would probably work, too. Dieter