eck"></i><b>4.6</b> 伪随机数生成</a></li>
<li class="chapter" data-level="4.7" data-path="numpy.html"><a href="numpy.html#section-4.7"><i class="fa fa-check"></i><b>4.7</b> 示例：随机漫步</a></li>
<li class="chapter" data-level="4.8" data-path="numpy.html"><a href="numpy.html#-1"><i class="fa fa-check"></i><b>4.8</b> 总结</a></li>
</ul></li>
<li class="chapter" data-level="5" data-path="preparation.html"><a href="preparation.html#pandas"><i class="fa fa-check"></i><b>5</b> pandas入门</a><ul