Python - 反转 Pandas DataFrame 的列顺序
要反转列顺序，请使用dataframe.columns和设置为-1-
dataFrame[dataFrame.columns[::-1]
首先，导入所需的库-
import pandas as pd
创建一个具有4列的DataFrame-
dataFrame = pd.DataFrame({"Car": ['BMW', 'Lexus', 'Tesla', 'Mustang', 'Mercedes', 'Jaguar'],"Cubic_Capacity": [2000, 1800, 1500, 2500, 2200, 3000],"Reg_Price": [7000, 1500, 5000, 8000, 9000, 6000],"Units_Sold": [ 100, 120, 150, 110, 200, 250]
})反转列顺序-
df = dataFrame[dataFrame.columns[::-1]]
示例
以下是代码-
import pandas as pd
#创建数据框
dataFrame = pd.DataFrame({"Car": ['BMW', 'Lexus', 'Tesla', 'Mustang', 'Mercedes', 'Jaguar'],"Cubic_Capacity": [2000, 1800, 1500, 2500, 2200, 3000],"Reg_Price": [7000, 1500, 5000, 8000, 9000, 6000],"Units_Sold": [ 100, 120, 150, 110, 200, 250]
})
print"DataFrame ...\n",dataFrame
#反转数据框列
df = dataFrame[dataFrame.columns[::-1]]
print"\nReversed DataFrame....\n", df输出结果这将产生以下输出-
DataFrame ...
Car Cubic_Capacity Reg_Price Units_Sold
0 BMW 2000 7000 100
1 Lexus 1800 1500 120
2 Tesla 1500 5000 150
3 Mustang 2500 8000 110
4 Mercedes 2200 9000 200
5 Jaguar 3000 6000 250
Reversed DataFrame....
Units_Sold Reg_Price Cubic_Capacity Car
0 100 7000 2000 BMW
1 120 1500 1800 Lexus
2 150 5000 1500 Tesla
3 110 8000 2500 Mustang
4 200 9000 2200 Mercedes
5 250 6000 3000 Jaguar