Hi Folks, dict1 = {'ab':[[1,2,3,'d3','d4',5],12],'ac':[[1,3,'78a','79b'], 54],'ad': [[56,57,58,59],34], 'ax': [[56,57,58,59],34]} dict2 = {'ab':[[22,2,'a0','42s','c4','d3'],12],'ab':[[2,4,50,42,'c4'], 12],'ac':[[1,3,'79b',45,65,'er4'],54],'ae': [[56,57,58,59],34],'ax': [[9],34]} dict3 = {'ac':[[1,3,67,'gf'],12],'at':[[2,4,50,42,'c4'],12],'as': [[1,3,'79b',45,65,'er4'],54],'ae': [[56,57,58,59],34]} intersect = filter(dict1.has_key, dict2.keys()) intersect result: ['ax', 'ac', 'ab']
expect result dict1 intersection with dict2 {'ac':[1,3,'79b'], 'ab':[2,'d3']} # look last key/value 'ax' (dict1, dict2) even intersec a key but not values from list so not valid and difference from dict3 dict3 = {'ac':[[1,3,67,'gf'],12],'at':[[2,4,50,42,'c4'],12],'as': [[1,3,'79b',45,65,'er4'],54],'ae': [[56,57,58,59],34]} result from (intersect - dict3) {'ac':['79b'], 'ab':[2,'d3']} Thanks in advance! Before someone blame me. Yes I am trying learn python Functional Programming! ; ) Best Regards macm -- http://mail.python.org/mailman/listinfo/python-list