osx screen resolution using PyObjus

>>> from pyobjus import autoclass
>>> from pyobjus.dylib_manager import load_framework, INCLUDE
>>> load_framework(INCLUDE.AppKit)
>>> nscreen = autoclass('NSScreen')
>>> screen_count = int(nscreen.screens().count())
>>> for scr in range(screen_count):
 ...     screen = nscreen.screens().objectAtIndex_(0)
 ...     print screen.frame.size.width, screen.frame.size.height
 ... 
 1680.0 1050.0