擅长:python、mysql、java
<p>这样行吗?在这个解决方案中,我使用<code>x.name</code>来获取行索引。在</p>
<pre><code>df['Cumulative Total'] = df.apply(lambda x: x['Total'] if x.name == 0 else x.shift()['Cumulative Total']-(x.shift()['Total']*(x.shift()['Annualized Rate']/1200)),axis=1)
</code></pre>