close a running application with python and NSWorkspace

closeapp.py

#!/usr/bin/python

from AppKit import NSWorkspace

def closeRunningApplication(bundle_id):
    ws = NSWorkspace.sharedWorkspace()
    runningApps = ws.runningApplications()    
    for i in runningApps:
        if i.bundleIdentifier() == bundle_id:
            i.terminate()

def main():
    closeRunningApplication('app.bundle.id')
    
if __name__ == '__main__':
    main()