How to merge two dicts and combine common keys?

Question

I would like to know how if there exists any python function to merge two dictionary and combine all values that have a common key.

I have found function to append t

Answer 1

There is no built-in function for this but you can use a defaultdict for this:

from collections import defaultdict
d = defaultdict(list)
for other in [d1, d1]:
    for k, v in other.items():
        d[k].append(v)