擅长:python、mysql、java
<p>怎么样:</p>
<pre><code>class A:
def stuff(self):
pass
a = A()
if hasattr(a, 'another'):
print(a.another)
else:
A.another = property(lambda self: 1)
print(a.another)
</code></pre>
<p>您可以通过在运行时设置属性来简单地修补类</p>
<pre><code>Result: 1
</code></pre>