擅长:python、mysql、java
<pre><code>import collections
d = {'happy':['sun', 'moon', 'chocolate'], 'sad':['fail', 'test', 'bills'], 'random': ['baloon', 'france', 'sun'] }
w = collections.defaultdict(list)
for k,v in d.iteritems():
for i in v: w[i].append(k)
print [l for l in w.itervalues() if len(l)>1]
</code></pre>
<p>给出:</p>
<pre><code>[['random', 'happy']]
</code></pre>