[Pyobjc-dev] Loading Classes from Private Frameworks with objc.lookUpClass

[Eric F. <er...@di...>]

Hi Folks,

I feel like I’ve been banging my head against a wall and looking for a couple of pointers.

I have seen examples of writing mail.app plugins where the private class is loaded using objc.lookUpClass.  For some reason I seem completely unable to get this to work.

I have tested from the command line using a variety of class names and any of the classes from public frameworks seem to load just fine (i.e NSOjbect etc).  When I try to load the MVMailBundle class using:

objc.lookUpClass('MVMailBundle’)

I receive an error: objc.nosuchclass_error: MVMailBundle

System details are: Mac OSX 10.10.2
Python: 2.7
PyObjC: PyObjC 3.0.4 

Is there somewhere that I need to switch on or enable the support for loading classes from private frameworks?

Any guidance would be really appreciated.

Cheers,
Eric.