我在下面有df
Country Val1 Val2
Australia 4 7
Bambua 23 44
Tambua 24 2
如何减去两列
df ['Val1']-df ['Val2'],如果Val1大于'Val2'
df ['Val2']-df ['Val1'],如果Val2大于'Val1'
您也可以只计算绝对值:
pdf['diff'] = np.abs(pdf.Val1 - pdf.Val2)
Country Val1 Val2 diff
0 Australia 4 7 3
1 Bambua 23 44 21
2 Tambua 24 2 22
使用numpy.where
:
numpy.where