python2 里面有没有什么优雅的方法对字典相同的 key 求和 - V2EX

python2 里面有没有什么优雅的方法对字典相同的 key 求和 - V2EX

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这是一个创建于 4287 天前的主题，其中的信息可能已经有所发展或是发生改变。

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

4 条回复 2014-07-24 14:43:21 +08:00

1

lll9p

2014 年 7 月 24 日

1

http://stackoverflow.com/questions/3490738/how-to-sum-dict-elements
http://stackoverflow.com/questions/8584504/python-sum-on-keys-for-list-of-dictionaries

2

imn1

2014 年 7 月 24 日

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

3

imn1

2014 年 7 月 24 日

呃，求和，反应成计数了
统计方面的习惯都交给pandas了

4

Zuckonit

OP

2014 年 7 月 24 日

@lll9p @imn1 thanks

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