python2 里面有没有什么优雅的方法对字典相同的 key 求和

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dict_a = {'a' : 1, 'b' : 2}
dict_b = {'a' : 2, 'b' : 3}
如何得到dict_c = {'a': 3, 'b': 5}

4 replies • 2014-07-24 14:43:21 +08:00

lll9p

Jul 24, 2014

imn1

Jul 24, 2014

class collections.Counter([iterable-or-mapping])

imn1

Jul 24, 2014

呃，求和，反应成计数了
统计方面的习惯都交给pandas了

Zuckonit

Jul 24, 2014

@lll9p @imn1 thanks