擅长:python、mysql、java
<p>不要写别人已经为你写的代码。这将执行相同的操作:</p>
<pre><code>import collections
backpack = collections.Counter({'gold coin': 42, 'rope': 1})
dragonLoot = ['gold coin', 'dagger', 'gold coin', 'gold coin', 'ruby']
backpack.update(dragonLoot)
</code></pre>
<p>有关详细信息,请参见<a href="https://docs.python.org/3/library/collections.html#collections.Counter" rel="nofollow">^{<cd1>}</a>。在</p>