从字典python列表中查找键的值

Question

如何从字典列表中获取给定键的值？

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

'mylist'中的词典数量未知,我想找到附加到键'sort_order'的值.

我失败的尝试:

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

谢谢

Answer 1

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

您还可以将所有词典组合成一个词典,并访问:

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