How to merge lists value with shared key of two dictionaries?-CodePudding

e.g.

d1 = {'a':[1, 2, 3], 'b': [1, 2, 3]}
d2 = {'a':[4, 5, 6], 'b': [3, 4, 5]}

The output should be like this:

{'a':[1, 2, 3, 4, 5, 6], 'b': [1, 2, 3, 4, 5]}

If the value repeats itself, it should be recorded only once.

CodePudding user response：

Assuming both dictionaries have the same keys and all keys are present in both dictionaries.

One way to achieve could be:

d1 = {'a':[1, 2, 3], 'b': [1, 2, 3]}
d2 = {'a':[4, 5, 6], 'b': [3, 4, 5]}

# make a list of both dictionaries
ds = [d1, d2]

# d will be the resultant dictionary
d = {}

for k in d1.keys():
    d[k] = [d[k] for d in ds]
    d[k] = list(set([item for sublist in d[k] for item in sublist]))

print(d)

Output

{'a': [1, 2, 3, 4, 5, 6], 'b': [1, 2, 3, 4, 5]}