Combining two dictionaries into one with the same keys?

Question

I\'ve looked through a few of the questions here and none of them seem to be exactly my problem. Say I have 2 dictionaries, and they are dict1

{\'A\': 25 ,          


        

Answer 1

This is one way, using defaultdict:

# the setup
>>> from collections import defaultdict
>>> dict1 = {'A': 25, 'B': 41, 'C': 32}
>>> dict2 = {'A': 21, 'B': 12, 'C': 62}

# the preperation
>>> dicts = [dict1, dict2]
>>> final = defaultdict(list)

# the logic
>>> for k, v in ((k, v) for d in dicts for k, v in d.iteritems()):
    final[k].append(v)

# the result
>>> final 
defaultdict(, {'A': [25, 21], 'C': [32, 62], 'B': [41, 12]})