[targetsmart] > > I am trying to compare two nested dictionaries, I want to know what is > > the exact difference between them. I tried this solution
[Steven D'Aprano] > If you want to know the difference between two dictionaries, you have to > consider: > > (1) Keys that are in the first dict, but not the second; > > (2) Keys that are in the second dict, but not the first; and > > (3) Keys which are in both dicts, but have different values. Steven, thanks for the excellent specification. Here's the code: s1 = set(d1) s2 = set(d2) first_not_second = s1 - s2 second_not_first = s2 - s1 difference_values = set(k for k in s1 & s2 if d1[k] != d2[k]) If the values are hashable, an alternate approach is: s1 = set(d1.items()) s2 = set(d2.items()) first_not_second = s1 - s2 second_not_first = s2 - s1 Raymond -- http://mail.python.org/mailman/listinfo/python-list
