我在以下形式的 pandas 中有一个数据框:
column
0 0
1 1
2 3
3 6
4 10
5 15
6 21
7 28
8 36
9 45
10 55
11 66
12 78
13 91
14 105
15 120
任务是每 10 行求和并创建新列来求和。结果应该是这样的数据框:
num sum Description(no need to add this column)
0 0 0 sum of numbers of rows of column "num" by indexes(0)
1 1 1 sum of numbers of rows of column "num" by indexes(0-1)
2 3 4 sum of numbers of rows of column "num" by indexes(0-2)
3 6 10 sum of numbers of rows of column "num" by indexes(0-3)
4 10 20 sum of numbers of rows of column "num" by indexes(0-4)
5 15 35 sum of numbers of rows of column "num" by indexes(0-5)
6 21 56 sum of numbers of rows of column "num" by indexes(0-6)
7 28 84 sum of numbers of rows of column "num" by indexes(0-7)
8 36 120 sum of numbers of rows of column "num" by indexes(0-8)
9 45 165 sum of numbers of rows of column "num" by indexes(0-9)
10 55 220 sum of numbers of rows of column "num" by indexes(1-10)
11 66 285 sum of numbers of rows of column "num" by indexes(2-11)
12 78 360 sum of numbers of rows of column "num" by indexes(3-12)
13 91 445 sum of numbers of rows of column "num" by indexes(4-13)
14 105 540 sum of numbers of rows of column "num" by indexes(5-14)
15 120 645 sum of numbers of rows of column "num" by indexes(6-15)
你能解释一下如何使用 lambda 吗？我试过使用 shift，但没用。
请您参考如下方法:
