Python 比较两个数据帧，获得差异并完成

我想做的是比较这两个图像，找出哪些行在df2中，哪些行不在df1中。我想比较日期（索引），然后将差异按相同顺序放入df1中

您可以加入两个数据集，然后删除重复项：

df1:
Date       Fruit  Num  Color 
2013-11-24 Banana 22.1 Yellow
2013-11-24 Orange  8.6 Orange
2013-11-24 Apple   7.6 Green
2013-11-24 Celery 10.2 Green
2013-11-24 strawberry 15.2 black

df2:
Date       Fruit  Num  Color 
2013-11-24 Banana 22.1 Yellow
2013-11-24 Orange  8.6 Orange
2013-11-24 Apple   7.6 Green
2013-11-24 Celery 10.2 Green
2013-11-25 Apple  22.1 Red
2013-11-25 Orange  8.6 Orange

result
df1:
2013-11-24 Banana 22.1 Yellow
2013-11-24 Orange  8.6 Orange
2013-11-24 Apple   7.6 Green
2013-11-24 Celery 10.2 Green
**2013-11-25 Apple  22.1 Red**
**2013-11-25 Orange  8.6 Orange**
2013-11-24 strawberry 15.2 black

输出：

df2.append(df1).drop_duplicates()

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@耶斯雷尔：好的。现在按同样的顺序。

         Date       Fruit   Num   Color
0  2013-11-24      Banana  22.1  Yellow
1  2013-11-24      Orange   8.6  Orange
2  2013-11-24       Apple   7.6   Green
3  2013-11-24      Celery  10.2   Green
4  2013-11-25       Apple  22.1     Red
5  2013-11-25      Orange   8.6  Orange
4  2013-11-24  strawberry  15.2   black