Monkey patch to raise AttributeError on attempted use of a particular attribute of an object
<p>I have an instance of a python class.</p>

<pre><code>class Fum(object):
  foo = Foo()
  bar = Bar()

fum = Fum()
</code></pre>

<p>For good reasons that I don't want to get into, I want to monkey patch this object so that one of its attributes is off-limits in a certain use case. I'd prefer that if I or another developer down the road tries to use the attribute on the monkey-patched object, a useful exception is raised which explains the situation. I tried to implement this with a property, but am not having luck. </p>

<p>e.g.,</p>

<pre><code>def raiser():
  raise AttributeError("Don't use this attribute on this object. Its disabled for X reason.")

fum.bar = property(raiser)

&gt;&gt;&gt; fum.bar
&gt;&gt;&gt; &lt;property object at 0xb0b8b33f&gt;
</code></pre>

<p>What am I missing?</p>
