<p>这是我的代码:</p>
<pre><code>import itertools
print(itertools.combinations('ABCD', 2))
</code></pre>
<p>我希望输出<code>AB AC AD BC BD CD</code>,如<a href="https://docs.python.org/3.4/library/itertools.html#itertools.combinations" rel="nofollow">intertools docs</a>,
但我得到<code><itertools.combinations object at 0x030A2A50></code></p>
<p>怎么了?在</p>