A utility known as ‘zopectl’ is installed into generated instance homes.
If you wish to run Zope in debug mode, run zopectl in foreground mode:
$ bin/zopectl fg
You can also use it to inspect a Zope instance’s running state via an interactive Python interpreter by passing zopectl the ‘debug’ parameter on the command line. The ‘top-level’ Zope object (the root folder) will be bound to the name ‘app’ within the interpreter. You can then use normal Python method calls against app and use the Python interpreter normally to inspect results:
$ bin/zopectl debug
Starting debugger (the name "app" is bound to the top-level Zope object)
>>> app.keys()
['acl_users', 'Control_Panel', 'temp_folder', 'browser_id_manager', 'session_data_manager', 'error_log', 'index_html', 'standard_error_message']
>>>