In Python, I have list of dicts:
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dict1 = [{'a':2, 'b':3},{'a':3, 'b':4}]2
I want one final dict that will contain the sum of all dicts.
I.e the result will be: {'a':5, 'b':7}
N.B: every dict in the list will contain same number of key, value pairs.
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Answer
A little ugly, but a one-liner:
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dictf = reduce(lambda x, y: dict((k, v + y[k]) for k, v in x.iteritems()), dict1)2