gistfile1.py

@hook.subscribe.client_new
def dialogs(window):


    program_dict = {'firefox-aurora': 'Home',
                     'emacs': 'emacs',
                     'thunderbird': 'mail',
                     'urxvt': 'terminal',
                     'skype': 'skype'}

    with open('/home/xeno/file', 'wb') as fname:
         fname.write(window.window.get_wm_class()[0])
    
    def closure(*args):

        windowtype = window.window.get_wm_class()
         
        with open('/home/xeno/file', 'wb') as fname:
             fname.write(windowtype[0])

        if windowtype:
             try:
                 window.togroup(program_dict.pop(windowtype[0]))
             except KeyError:
                 pass
             
    return closure