擅长:python、mysql、java
<p>您正在寻找<a href="http://docs.python.org/2/library/re.html#re.sub" rel="noreferrer">re.sub</a>函数。</p>
<pre><code>import re
s = "Example String"
replaced = re.sub('[ES]', 'a', s)
print replaced
</code></pre>
<p>将打印<code>axample atring</code></p>