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_')
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