python - 以列格式将一个表的输出合并到另一个表

Question

我有一个如下所示的数据框:

Plant       Date        Item          unitsSold
1          10-oct        A               15        
1          11-Oct        A               20
1          12-Oct        A               10
2          10-Oct        B               19
2          11-Oct        A               20
2          12-Oct        C               10

另一个数据集如下所示:

Plant       Date         Item        unit Price
1          10-Oct        A,B           10            ---That means both A and B have same unit price
1          11-Oct         A            14
1          12-Oct        A,B,C         10            ----That means both A, B and C have same price
2          10-oct        A,B,C         15
2          11-Oct         A            10
3          12-Oct        A,C           20

现在我希望我的输出看起来像这样:

Plant       Date         Item        unit Price      A.UnitsSold        B.Unitssold          C.unitssold
1          10-Oct        A,B           10            15                    0                     0    --Since only a was sold on 10-oct
1          11-Oct         A            14            20                    0                     0
1          12-Oct        A,B,C         10            10                    0                     0   
2          10-oct        A,B,C         15            0                     19                    0
2          11-Oct         A            10            20                    0                     0
3          12-Oct        A,C           20            0                     0                     10

谁能告诉我如何获取已售单位的列。注意-可以有任意数量的样式

Answer 1

与列合并

df_new =pd.concat([df1, df2], axis=1)