擅长:python、mysql、java
<p>打印字典时,对字典的每个元素调用<code>repr</code>。
<code>repr</code>调用<code>__repr__</code>方法。所以只需将<code>__repr__</code>添加到类中:</p>
<pre class="lang-py prettyprint-override"><code>class TrackableObject:
# some methods here including __str__ ...
__repr__ == __str__
</code></pre>