通过分隔符将记录DataFrame分成几条记录[重复]

Question

我有数据框。例子：

df1:
Date       Fruit                Color 
2013-11-23 Banana@Orange       Yellow
2013-11-24 Orange              Orange
2013-11-25 Apple@Strawberry     Green
2013-11-24 Celery               Green

我想收到：

df1:
Date       Fruit                Color 
2013-11-23 Banana              Yellow
2013-11-23 Orange              Yellow
2013-11-24 Orange              Orange
2013-11-25 Apple                Green
2013-11-25 Strawberry           Green
2013-11-24 Celery               Green

我唯一的想法是遍历循环，找到分隔符并构建一个新数组。 这还能怎么做？

Answer 1

使用str.split 和df.explode(pandas version >= 0.25)：

In [1501]: df1.Fruit = df1.Fruit.str.split('@')
In [1503]: df1.explode('Fruit')               
Out[1503]: 
         Date       Fruit   Color
0  2013-11-23      Banana  Yellow
0  2013-11-23      Orange  Yellow
1  2013-11-24      Orange  Orange
2  2013-11-24       Apple   Green
2  2013-11-24  Strawberry   Green
3  2013-11-24      Celery   Green