Python - 为 Pandas DataFrame 中的列名添加前缀
要为所有列名添加前缀，请使用该add_prefix()方法。首先，导入所需的Pandas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]
})使用_column为每一列添加前缀add_prefix()-
dataFrame.add_prefix('column_')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
print"\nUpdated DataFrame...\n",dataFrame.add_prefix('column_')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
Updated DataFrame...
column_Car column_Cubic_Capacity column_Reg_Price column_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