擅长:python、mysql、java
<p>你应该看看<code>collections.Counter</code></p>
<pre><code>In [1]: from collections import Counter
In [2]: c = Counter(['In', 'the', 'beginning', 'God', 'created', 'the', 'heaven', 'and', 'the', 'earth', '.'])
In [3]: c
Out[3]:
Counter({'.': 1,
'God': 1,
'In': 1,
'and': 1,
'beginning': 1,
'created': 1,
'earth': 1,
'heaven': 1,
'the': 3})
</code></pre>