Anyhow, I found myself needing a way to find the stuff (not just difference) between two dictionaries and a quick google led me to deepdiff by Sep Dehpour. It was good but found it a tad overkill for what I was doing. So another round of google and stackoverflow allowed me to cobble together this:
class SimpleDictDiffer(object):
"""
Calculate the difference between two dictionaries as:
(1) items added
(2) items removed
(3) keys same in both but changed values
(4) keys same in both and unchanged values
"""
def __init__(self, first_dict, second_dict):
self.current_dict, self.past_dict = first_dict, second_dict
self.set_current, self.set_past = set(first_dict.keys()), set(second_dict.keys())
self.intersect = self.set_current.intersection(self.set_past)
def added(self):
return self.set_current - self.intersect
def removed(self):
return self.set_past - self.intersect
def changed(self):
return set(o for o in self.intersect if self.past_dict[o] != self.current_dict[o])
def unchanged(self):
return set(o for o in self.intersect if self.past_dict[o] == self.current_dict[o])
A github gist for this is also available.
