gistfile1.txt

from Cocoa import NSApp, NSEvent, NSKeyDownMask # , NSApplication
from Foundation import NSObject, NSLog
from PyObjCTools import AppHelper

from AppKit import NSApplication
# https://bitbucket.org/ronaldoussoren/pyobjc/
# you have to enable access for assistive devices in 'System Preferences>Universal Access>Keyboard'

class AppDelegate(NSObject):

    def applicationDidFinishLaunching_(self, notification):
        print 'A'
        NSEvent.addGlobalMonitorForEventsMatchingMask_handler_(NSKeyDownMask, handler)
        print 'B'

def handler(event):
    try:
        print 'C'
        NSLog(u"%@", event)
        print 'D'
    except KeyboardInterrupt:
        AppHelper.stopEventLoop()

def main():
    app = NSApplication.sharedApplication()
    delegate = AppDelegate.alloc().init()
    NSApp().setDelegate_(delegate)
    print 'E'
    AppHelper.runEventLoop()

if __name__ == '__main__':
    main()

It is the handler(self,event)
remove self and only have handler(event)

This is because of how pyObjC handles the function.

My mistake for making handler a method of AppDelegate class, it should be it's own function (fixed).

Yes. AppDelegate does not like it. (I am a bit unsure of why.) You could have had a handler that was part of a different object though.

so

  class Test:
    def handler(self, event):
        print event

this handler should be usable.

I still see the same error though. type 'exceptions.TypeError': Argument 3 is a block, but no signature available

any ideas?

Your code works for me now. I'm on Python2.7 and using the pyobjc in the link you have above.

I am however not able to send KeyboardInterrupt to abort the process.

I installed Python2.7 and now none of the imports work...

Python 2.7.3 (v2.7.3:70274d53c1dd, Apr 9 2012, 20:52:43)
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.

from Foundation import NSObject, NSLog
Traceback (most recent call last):
File "", line 1, in
ImportError: No module named Foundation
from PyObjCTools import AppHelper
Traceback (most recent call last):
File "", line 1, in
ImportError: No module named PyObjCTools

You need to install the dependencies again for python2.7