擅长:python、mysql、java
<p>如果我从数组<code>a</code>开始,如下所示</p>
<pre><code>>>> a = np.random.rand(5, 5) - 0.5
>>> a
array([[ 0.24116601, -0.23917393, 0.46607471, 0.08560729, 0.33878893],
[ 0.24681769, -0.01693847, 0.22579766, -0.38570793, -0.2075437 ],
[-0.19602781, -0.46108244, -0.40341244, 0.42579818, 0.4655471 ],
[-0.14669409, 0.36171014, -0.36496558, -0.30983999, -0.06633584],
[-0.09159042, 0.23346471, 0.37680536, -0.09281205, -0.04552193]])
</code></pre>
<p>我可以使用</p>
^{pr2}$