Umm, My answer is not correct, but for a different reason; it seems you need the length of my previous answer, thus:
PythonWin 2.4 (#60, Feb 9 2005, 19:03:27) [MSC v.1310 32 bit (Intel)] on win32. Portions Copyright 1994-2004 Mark Hammond ([EMAIL PROTECTED]) - see 'Help/About PythonWin' for further copyright information. >>> ref = [3, 3, 1, 1, 3] >>> lst=[5, 1, 4, 5, 3] >>> answer = len([ val for val in set(ref) for x in range(min(lst.count(val), >>> ref.count(val)))]) >>> answer 2 >>> - Paddy. -- http://mail.python.org/mailman/listinfo/python-list
