擅长:python、mysql、java
<p>我也不确定,所以我自己试试看:</p>
<pre><code>In [84]: class Foo(object):
...: def __add__(self, rhs):
...: print 'foo.add'
...:
...: class Bar(object):
...: def __radd__(self, lhs):
...: print 'bar.radd'
...:
...: f=Foo(); b=Bar()
...: f+b
...: 1+b
foo.add
bar.radd
</code></pre>
<p>那我现在就记得规则了。在</p>