您可以使用Base方法cumsum计算向量的累积和，然后将其存储在数据帧的新列中:

You can use the Base method cumsum to calculate the cumulative sum of a vector, and then store that in a new column of the dataframe:

df[!, :cumulative_sum] = cumsum(df[!, :scores]) # the ! is to avoid copying

根据下面的@BogumiłKamiński的评论，您也可以这样做:

Per @Bogumił Kamiński's comment below, you can also do:

df.cumulative_sum = cumsum(df.scores)

这是更简洁的语法.