Question

我要计算总和，但还要为每个总和增加增长率。

增长率= 0.1

Cumsum with Growth列的每一行将在前几行的总和中添加一个增长分量：
Row 2 = (1+2) + (1*0.1)
Row 3 = (3.1 + 1) + (3.1 * 0.1)
Row 4 = (4.41 + 5) + (4.41* 0.1)

如何在不重复Pandas中的每一行的情况下完成此任务？

Answer 1

您可以尝试以下方法：

col = [df.val.values[0]]
for i in range(1, len(df.index)):
    col.append(col[i-1]+df.val.values[i]+col[i-1]*0.1)
df['cumsumwithgrowth'] = col

df

   val  cumsumwithgrowth
0    1             1.000
1    2             3.100
2    1             4.410
3    5             9.851

Answer 2

我将创建另一个名为CumSumwithGrowth的列

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大熊猫与增长率

2 个答案: