擅长:python、mysql、java
<p>您可以使用字典理解:</p>
<pre><code>stock = ['ferrari', 'ford', 'ferrari', 'mustang', 'lambo', 'mustang', 'ferrari', 'ford', 'ford']
cardict = {m: {k: v if k=='Colour' else stock.count(m.lower()) for k, v in n.items()} for m, n in cardict.items()}
</code></pre>
<p>收益率:</p>
<pre><code>{'Ferrari': {'Colour': 'Red', 'Carcount': 3}, 'Lambo': {'Colour': 'Yellow', 'Carcount': 1}, 'Mustang': {'Colour': 'Black', 'Carcont': 2}}
</code></pre>