Removing duplicate keys from python dictionary but summing the values

Question

I have a dictionary in python

d = {tags[0]: value, tags[1]: value, tags[2]: value, tags[3]: value, tags[4]: value}

imagine that this dict i

Answer 1

tps = [('cat',5),('dog',9),('cat',4),('parrot',6),('cat',6)]

from collections import defaultdict

dicto = defaultdict(int)

for k,v in tps:
    dicto[k] += v

Result:

>>> dicto
defaultdict(, {'dog': 9, 'parrot': 6, 'cat': 15})