如何抓取类似于东方财富网上的个股资金历史流向数据

[yugiant]

本人是Python新手，最近想通过Python抓取例如东方财富网上的个股资金历史流向数据，分别使用了BeautifulSoap和Pyquery.
其中用Pyquery不报错，但print内容均为空。

其中BeautifulSoap能抓到
<tr>
<th data-field="date" rowspan="2">日期</th>
<th rowspan="2">收盘价</th>
<th rowspan="2">涨跌幅</th>
<th colspan="2">主力净流入</th>
<th colspan="2">超大单净流入</th>
<th colspan="2">大单净流入</th>
<th colspan="2">中单净流入</th>
<th colspan="2">小单净流入</th>
</tr>
<tr>
<th data-field="zlje1" data-sortname="zlje1">净额</th>
<th data-field="zljzb1" data-sortname="zljzb1">净占比</th>
<th data-field="cddje1" data-sortname="cddje1">净额</th>
<th data-field="cddjzb1" data-sortname="cddjzb1">净占比</th>
<th data-field="ddje1" data-sortname="ddje1">净额</th>
<th data-field="ddjzb1" data-sortname="ddjzb1">净占比</th>
<th data-field="zdje1" data-sortname="zdje1">净额</th>
<th data-field="zdjzb1" data-sortname="zdjzb1">净占比</th>
<th data-field="xdje1" data-sortname="xdje1">净额</th>
<th data-field="xdjzb1" data-sortname="xdjzb1">净占比</th>
</tr>
但如何抓取到真实值，还望大侠们指导
先谢谢了