I'm writing a small cross-platform wxPython app, however on every platform I need to use some platform-specific API. On Mac OS it can be done using PyObjC. 
I'm searching for tutorial on how to use PyObjC. However, all I found so far were tutorials with Xcode. I want my app to be able to run on mac/win/lin, without changes, and I don't want to develop it in Xcode. Is there a way?
UPD. To be more specific I need to access some pen-tablet events from Mac OS X and I wanted to use PyObjC for that (I don't see any other ways).
What do you need Xcode for? If you need it for the windows/gui (*.nib, *.xib files), then you should perhaps search for 'creating *.nib, *xib without Xcode'.
That's only a search hint and no satisfying answer.
PyObjC tutorial without Xcode