What does "mro()" do in Python?
<p>In <code>django.utils.functional.py</code>:</p>

<pre><code>for t in type(res).mro():#&lt;-----this
    if t in self.__dispatch:
        return self.__dispatch[t][funcname](res, *args, **kw)
</code></pre>

<p>I don't understand mro.<br>
I search by google,and saw much english articles, but I still can't understand it.</p>
