<blockquote>
<p><strong>Possible Duplicate:</strong><br/>
<a href="https://stackoverflow.com/questions/1301346/the-meaning-of-a-single-and-a-double-underscore-before-an-object-name-in-python">The meaning of a single- and a double-underscore before an object name in Python</a> </p>
</blockquote>
<p>对于Python中的私有成员和方法,我应该使用哪一个foo(下划线)或bar(双下划线)?</p>