擅长:python、mysql、java
<p>在这里工作很好。</p>
<pre><code>>>> import codecs
>>> contents = codecs.open('foo.txt', encoding='utf-8').read()
>>> print contents
This is a message.
>>> print contents.replace('s', '3')
Thi3 i3 a me33age.
</code></pre>
<p><em>注意:</em>如果希望第二个替换生效,则应在<em>newcontents</em>上执行:</p>
<pre><code>newcontents = contents.replace('a','e')
newcontents = newcontents.replace('s', '3')
</code></pre>