擅长:python、mysql、java
<p>您可以使用<a href="https://docs.python.org/3/library/collections.html#collections.defaultdict" rel="nofollow noreferrer">^{<cd1>}</a>,然后只使用<code>append</code>,如下所示:</p>
<pre><code>from collections import defaultdict
dct = defaultdict(list)
for k,v in interests.items():
dct[v].append(k)
</code></pre>
<p>输出:</p>
<pre><code>{'Computer': ['Sophia', 'Hikari'],
'Dancing': ['Anders', 'Mette'],
'Rowing': ['Riko', 'Troels', 'Sarah']}
</code></pre>