如何计算pandas中前N行的累积和？

呼叫

rolling

min_periods=1

window=11

sum

In [142]:df['A'].rolling(min_periods=1, window=11).sum()Out[142]:0       NaN1      0.002      0.003      3.334     13.545     20.216     27.217     35.488     41.559     43.7210    47.1011    49.5812    51.6613    58.6114    55.2815    46.8216    46.8117    49.5018    47.9619    48.0920    48.9321    45.8722    43.91Name: A, dtype: float64