In the past I used this script as groundwork for a little helper which swaps the Modifier Keys (CMD, OPT, CTRL) for me, when a specific application getting focused and unfocused. With MacOS 12.3 Apple finally removed Python2 Not a big deal, if you reinstall it via Homebrew and update all your Python scripts. But what is about Apple related modules like NSWorkspace from AppKit? Code: try: from AppKit import NSWorkspace except ImportError: print "Can't import AppKit -- maybe you're running python from brew?" print "Try running with Apple's /usr/bin/python instead." exit(1) This code returns reasonably the print-message. Question Is this not available anymore? Because the homebrew version can't find this and Python3 seems also not to know it. Is NSWorkspace for Python now deprecated?