根据值在多维字典中查找键 [英] Find keys in multidimensional dict based on value

问题描述

我有一个像下面这样的字典:

I have a dict of dicts that looks like the following:

{ 'a':{'foo': True,
       'bar': 1,
       'baz': 'abc'},
  'b':{'foo': True,
       'bar': 21,
       'baz': 'abc'},
  'c':{'foo': True,
       'bar': 3,
       'baz': 'cba'}}

最简单的方法是将dict过滤为仅包含其'baz'的子值为'abc'的那些键?因此，在上面的示例中，它将返回一个类似以下内容的字典:

What is the most efficient way to filter the dict to only include those keys whose sub-values for 'baz' are 'abc'? So in the example above, it would return a dict that looked like:

{ 'a':{'foo': True,
       'bar': 1,
       'baz': 'abc'},
  'b':{'foo': True,
       'bar': 21,
       'baz': 'abc'}}

推荐答案

{k: v for k, v in my_dict.items() if v['baz'] == 'abc'}

这篇关于根据值在多维字典中查找键的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！