擅长:python、mysql、java
<p>也可以使用两个元组理解来执行此操作:</p>
<pre><code>from collections import Counter
your_dict = {'blue': ['Jules', 'Lucie'],
'brown': ['Maxime'],
'green': ['Maxime', 'Vincent', 'Lucie']}
Counter((inner_val for val in your_dict.values() for inner_val in val))
</code></pre>
<p><strong>Out:</strong></p>
<pre><code>Counter({'Jules': 1, 'Lucie': 2, 'Maxime': 2, 'Vincent': 1})
</code></pre>