Andreas Tawn wrote: >>Can someone suggest a easy method to do the inverse of dict(zip(x,y)) >>to get two lists x and y? >> >>So, if x and y are two lists, it is easier to make a dictionary using >>d = dict(zip(x,y)), but if I have d of the form, d = {x1:y1, >>x2:y2, ...}, what is there any trick to get lists x = [x1, x2, ...] >>and y = [y1, y2, ...] >> >>Cheers, >>Chaitanya. > > x = d.keys() > y = d.values()
But be aware that you lose order and of course duplicate keys: >>> d = dict(zip("abca", "xyzt")) >>> d.keys() ['a', 'c', 'b'] >>> d.values() ['t', 'z', 'y'] See also the note for the dict.items() method at http://docs.python.org/library/stdtypes.html#mapping-types-dict Peter -- http://mail.python.org/mailman/listinfo/python-list