擅长:python、mysql、java
<p>你可以用<a href="https://docs.python.org/2/library/stringio.html" rel="noreferrer">^{<cd1>}</a>代替你自己的<code>Dummy_Writer</code>:</p>
<blockquote>
<p>This module implements a file-like class, <code>StringIO</code>, that reads and writes a string buffer (also known as memory files). </p>
</blockquote>
<p>还有<a href="https://docs.python.org/2/library/stringio.html#module-cStringIO" rel="noreferrer">^{<cd3>}</a>,这是<code>StringIO</code>类的一个更快版本。</p>