擅长:python、mysql、java
<p>使用内置功能的简单方式:</p>
<pre><code>d = {'eyes_color': {"blue": 10, "brown": 12},
'hair_color': {"black": 15, "blonde": 7},
'gender': {"male": 16, "female": 6}
}
max_value, max_key = max(((v,k) for inner_d in d.values() for k,v in inner_d.items()))
print(max_key) # male
print(max_value) # 16
</code></pre>