CODEWITHSUNDEEP
pythondictionary
classmethod
classmethod

Reputation: 53

Identifying and adding values from dict to another dict, while both contain the similar keys

Let's say I had these two dictionaries, both containing similar keys to each other:

d_1 = {'a': 3, 'b': 4, 'c': 1}

d_2 = {'a': 5, 'b': 6, 'c': 9, 'd': 7}

Now, let's say I want to take the values of d_1 and add them to the corresponding values of d_2. How would I add the values of d_1's a key to the respective key in d_2 w/o individually saying d_2['a'] += d_1['a'] for each key? How could I go about writing a function that can take two dicts, compare their keys, and add those values to the identical existing key values in another dict?

For example, if I had a class named player and it has an attribute of skills which contains several skills and their values, e.g. strength: 10 or defense: 8, etc. Now, if that player were to come across an armor set, or whatever, that buffed specific skills, how could I take that buff dictionary, see what keys it has in common with the player's skills attribute, and add the respective values?

Upvotes: 1

Views: 603

Answers (1)

Flynn
Flynn

Reputation: 41

For every key in d_2, check if them in d_1, if so, add them up.

for key in d_2: if key in d_1: d_2[key] += d_1[key]

It seems you want to built a game, then you might not want to mess with the player's attribute. add them up and put the outcome to a new dict would be better. What's more, you can add more than two dict together, as you might have more than one buff.

for key in player: outcome[key] = 0 for buff in buffs: if key in buff: outcome[key] += buff[key] outcome[key] += player[key]

Upvotes: 3

Related Questions