[ProgBasics] merge_dict

merge_dict.py

# https://github.com/morcsanyitamas/pythonic-dictionaries
dict_one = {'a': 1, 'b': 2, 'c': 3}
dict_two = {'d': 1, 'e': 2, 'f': 3, 'a': 99}

def sort_dict(d):
    from collections import OrderedDict
    return OrderedDict(sorted(d.items()))

def merge_dict(a, b):
    return {key:a.get(key, 0) + b.get(key, 0) for key in set(list(a.keys()) + list(b.keys()))}

print(sort_dict(merge_dict(dict_one, dict_two)))