擅长:python、mysql、java
<p>您可以使用<code>re.split</code>:</p>
<pre><code>import re
s = "ads1323z123123c123123890sdfakslk123klaad,313ks"
results = list(filter(lambda x:len(x) <= 3, re.split('[^a-zA-Z]+', s)))
</code></pre>
<p>输出:</p>
<pre><code>['ads', 'z', 'c', 'ks']
</code></pre>