擅长:python、mysql、java
<p>使用正则表达式:</p>
<pre><code>import re
a = ['build999.100', 'build999.0', 'buil998.100',
'build997.100', 'build996.100', 'build996.0']
list(set(map(lambda x: re.sub(r'\..*$', '.100', x), a)))
</code></pre>
<p>或者</p>
<pre><code>list(set([re.sub(r'\..*$', '.100', x) for x in a]))
</code></pre>
<p>结果是</p>
<pre><code>>> ['build996.100', 'build999.100', 'buil998.100', 'build997.100']
</code></pre>