合并嵌套列表而不影响python中的键和值方向 [英] Combining a nested list without affecting the key and value direction in python

问题描述

我有一个将数据存储在列表中的程序. 当前和所需输出的格式为:

I have a program that stores data in a list. The current and desired output is in the format:

# Current Input
[{'Devices': ['laptops', 'tablets'],
  'ParentCategory': ['computers', 'computers']},

 {'Devices': ['touch'], 'ParentCategory': ['phones']}]

# Desired Output
[{'Devices': ['laptops', 'tablets','touch'],
  'ParentCategory': ['computers', 'computers','phones']}]    

您能给我一个关于如何将列表与另一条python代码或逻辑行组合以获得所需输出的想法吗?

Can you give me an idea on how to combine the lists with another python line of code or logic to get the desired output?

推荐答案

您可以执行以下操作:

def convert(a):
    d = {}
    for x in a:
        for key,val in x.items():
            if key not in d:
                d[key] = []
            d[key] += val
    return d

上面的代码适用于Python 3.

Code above is for Python 3.

如果您使用的是python 2.7，那么我认为您应该将items替换为iteritems.

If you're on Python 2.7, then I believe that you should replace items with iteritems.

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