How to get the difference between two dictionaries in Python?

Question

I have two dictionaries. I need to find the difference between the two which should give me both key and value.

I have searched and found some addons/packages like d

Answer 1

This function gives you all the diffs (and what stayed the same) based on the dictionary keys only. It also highlights some nice Dict comprehension, Set operations and python 3.6 type annotations :)

from typing import Dict, Any, Tuple
def get_dict_diffs(a: Dict[str, Any], b: Dict[str, Any]) -> Tuple[Dict[str, Any], Dict[str, Any], Dict[str, Any], Dict[str, Any]]:

    added_to_b_dict: Dict[str, Any] = {k: b[k] for k in set(b) - set(a)}
    removed_from_a_dict: Dict[str, Any] = {k: a[k] for k in set(a) - set(b)}
    common_dict_a: Dict[str, Any] = {k: a[k] for k in set(a) & set(b)}
    common_dict_b: Dict[str, Any] = {k: b[k] for k in set(a) & set(b)}
    return added_to_b_dict, removed_from_a_dict, common_dict_a, common_dict_b

If you want to compare the dictionary values:

values_in_b_not_a_dict = {k : b[k] for k, _ in set(b.items()) - set(a.items())}