擅长:python、mysql、java
<pre><code>Python 2.7.10 (default, Oct 23 2015, 19:19:21)
>>> d = {"key1": 1, "key2": 2, "key3": 3, "key98": 98 , "key99": 99 , "key100": 100}
>>> sorted(d, reverse=True, key=d.get)[:3]
['key100', 'key99', 'key98']
</code></pre>