擅长:python、mysql、java
<p>您可以使用<a href="https://pandas.pydata.org/pandas-docs/version/0.24/reference/api/pandas.Series.cumsum.html" rel="nofollow noreferrer">cumsum</a>:</p>
<pre><code>df['total'] = (df.credit - df.debit).cumsum()
print(df)
</code></pre>
<p><strong>输出</strong></p>
<pre><code> credit debit total
0 1000 0 1000
1 0 100 900
2 0 200 700
3 500 0 1200
</code></pre>