[docs]class DictDiffer(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, current_dict, past_dict):
self.current_dict, self.past_dict = current_dict, past_dict
self.set_current, self.set_past = set(current_dict.keys()), set(past_dict.keys())
self.intersect = self.set_current.intersection(self.set_past)
[docs] def added(self):
return self.set_current - self.intersect
[docs] def removed(self):
return self.set_past - self.intersect
[docs] def changed(self):
return set(o for o in self.intersect if self.past_dict[o] != self.current_dict[o])
[docs] def unchanged(self):
return set(o for o in self.intersect if self.past_dict[o] == self.current_dict[o])