擅长:python、mysql、java
<p>从<a href="http://docs.python.org/2/library/sys.html#sys.getrefcount" rel="nofollow noreferrer">getrefcount docstring</a>:</p>
<blockquote>
<p>... The count returned is generally one higher than you might expect,
because it includes the (temporary) reference as an argument to <code>getrefcount()</code>.</p>
</blockquote>
<p>另外两个引用意味着python内部保存着对对象的两个引用。也许locals()和globals()字典各自算作一个引用?在</p>