我有一个数据帧,
Out[78]:
contract month year buys adjusted_lots price
0 W Z 5 Sell -5 554.85
1 C Z 5 Sell -3 424.50
2 C Z 5 Sell -2 424.00
3 C Z 5 Sell -2 423.75
4 C Z 5 Sell -3 423.50
5 C Z 5 Sell -2 425.50
6 C Z 5 Sell -3 425.25
7 C Z 5 Sell -2 426.00
8 C Z 5 Sell -2 426.75
9 CC U 5 Buy 5 3328.00
10 SB …