擅长:python、mysql、java
<p>您可以使用<a href="https://docs.python.org/3/library/heapq.html#heapq.nlargest" rel="nofollow noreferrer">^{<cd1>}</a>:</p>
<pre><code>from heapq import nlargest
from operator import itemgetter
nlargest(5, my_list, key=itemgetter(1))
</code></pre>
<blockquote>
<p>heapq.nlargest(n, iterable[, key])</p>
<p>Return a list with the <em>n</em> largest elements from the dataset defined by
iterable. <em>key</em>, if provided, specifies a function of one argument that
is used to extract a comparison key from each element in the iterable:
<code>key=str.lower</code> Equivalent to: <code>sorted(iterable, key=key, reverse=True)[:n]</code></p>
</blockquote>
<p><strong>输出:</strong></p>
^{pr2}$