从另一列的子字符串创建列

Question

我有一个 Pandas 数据框对象。我想从现有列的子字符串创建新列。我的数据如下所示：

    Date        variable                 want1          want2   want3
0   02-01-08    Australia - Sydney - A   Australia      Sydney  A
1   03-01-08    Australia - Sydney - A   Australia      Sydney  A
2   04-01-08    Australia - Sydney - A   Australia      Sydney  A
3   05-01-08    Canada - Toronto - B     Canada         Toronto B
4   06-01-08    Canada - Toronto - B     Canada         Toronto B

哪里want1来want3的我需要什么。

Answer 1

您可以pd.Series.str.split为此使用：

df[['want1', 'want2', 'want3']] = df['variable'].str.split(' - ', expand=True)