擅长：python、mysql、java
<p>你可以看看下面的帖子
<a href="https://stackoverflow.com/questions/27667759/is-ix-always-better-than-loc-and-iloc-since-it-is-faster-and-supports-i">Is .ix() always better than .loc() and .iloc() since it is faster and supports integer and label access?</a></p>
<p>必须的
[不同的索引选择]（<a href="http://pandas.pydata.org/pandas-docs/stable/indexing.html#different-choices-for-indexing" rel="nofollow noreferrer">http://pandas.pydata.org/pandas-docs/stable/indexing.html#different-choices-for-indexing</a>）</p>
