Obsolete, EasyDialogs has the same code (but working:-).

Mac/Lib/test/tdlg.py

-# Function to display a message and wait for the user to hit OK.
-# This uses a DLOG resource with ID=256 which is part of the standard
-# Python library.
-# The ID can be overridden by passing a second parameter.
-
-from Dlg import *
-from Events import *
-import string
-
-ID = 256
-
-def f(d, event):
-	what, message, when, where, modifiers = event
-	if what == keyDown and modifiers & cmdKey and \
-	   string.lower(chr(message & charCodeMask)) == 'o':
-		return 1
-
-def message(str = "Hello, world!", id = ID):
-	d = GetNewDialog(id, -1)
-	tp, h, rect = d.GetDialogItem(2)
-	SetDialogItemText(h, str)
-	while 1:
-		n = ModalDialog(f)
-		if n == 1: break
-
-def test():
-	message()
-
-if __name__ == '__main__':
-	test()

Mac/Lib/test/tdlg_modeless.py

-# Function to display a message and wait for the user to hit OK.
-# This uses a DLOG resource with ID=256 which is part of the standard
-# Python library.
-# The ID can be overridden by passing a second parameter.
-# This is the modeless version of this test program, the normal
-# modal version is in tdlg.py
-
-from Dlg import *
-from Evt import *
-from Events import *
-import MacOS
-import string
-
-ID = 256
-
-def message(str = "Hello, modeless world!", id = ID):
-	print 'This is to init the console window...'
-	d = GetNewDialog(id, -1)
-	tp, h, rect = d.GetDialogItem(2)
-	SetDialogItemText(h, str)
-	while 1:
-		ok, ev = WaitNextEvent(0xffff, 10)
-		if not ok:
-			continue
-		if IsDialogEvent(ev):
-			ok, window, item = DialogSelect(ev)
-			if ok:
-				if window == d:
-					if item == 1:
-						break
-					else:
-						print 'Unexpected item hit'
-				else:
-					print 'Unexpected dialog hit'
-		else:
-			MacOS.HandleEvent(ev)
-
-def test():
-	message()
-
-if __name__ == '__main__':
-	test()