The module MiniAEFrame provides a framework for an application that can function as an Open Scripting Architecture (OSA) server, i.e. receive and process AppleEvents. It can be used in conjunction with FrameWork or standalone. As an example, it is used in PythonCGISlave.
The MiniAEFrame module defines the following classes:
Your callback is called with the OSA Direct Object as first positional parameter. The other parameters are passed as keyword arguments, with the 4-character designator as name. Three extra keyword parameters are passed: _class and _type are the Class and Type designators and _attributes is a dictionary with the AppleEvent attributes.
The return value of your method is packed with aetools.packevent() and sent as reply.
Note that there are some serious problems with the current design. AppleEvents which have non-identifier 4-character designators for arguments are not implementable, and it is not possible to return an error to the originator. This will be addressed in a future release.