从字典列表python中查找键的值

问题描述

如何从字典列表中获取给定键的值?

How do I get a given key's value from a list of dictionaries?

mylist= [
    {
      'powerpoint_color': 'blue',
      'client_name': 'Sport Parents (Regrouped)'
    },
    {
      'sort_order': 'ascending',
      'chart_layout': '1',
      'chart_type': 'bar'
    }
]

mylist"中的字典数量未知，我想查找键sort_order"所附加的值.

The number of dictionaires in 'mylist' is unknown and I want to find the value attached to the key 'sort_order'.

我的失败尝试:

for key in mylist:
    for value in key:
        print key['sort_order']

谢谢

推荐答案

mylist= [{'powerpoint_color': 'blue', 'client_name': 'Sport Parents (Regrouped)'}, {'sort_order': 'ascending', 'chart_layout': '1', 'chart_type': 'bar'}]

print [d["sort_order"] for d in mylist if "sort_order" in d][0]

结果:

ascending

<小时>

您还可以将所有字典组合成一个字典，然后访问它:

You could also combine all of the dictionaries into a single dict, and access that:

combined_d = {key: value for d in mylist for key,value in d.iteritems() }
print combined_d["sort_order"]

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