Debug Script (Python) with pdb
There's a handy two-line Zope2 Product that allows pdb.set_trace() inside Script (Python) objects. Check it out here:
svn co svn://svn.zope.org/repos/main/Products.enablesettrace/trunk enablesettrace
And then put it into your Products directory. This is only for development, of course.
To get listing ("l" command of pdb) of source code and tools like pdbtrack working for Script (Python), download and install the ScriptDebugging Product.
