Python - 如何使用字典重命名 Pandas DataFrame 中的多个列标题？
要重命名多个列标题，请使用rename()方法并在columns参数中设置字典。首先，让我们创建一个DataFrame-
dataFrame = pd.DataFrame({"Car": ['BMW', 'Mustang', 'Tesla', 'Mustang', 'Mercedes', 'Tesla', 'Audi'],"Cubic Capacity": [2000, 1800, 1500, 2500, 2200, 3000, 2000],"Reg Price": [7000, 1500, 5000, 8000, 9000, 6000, 1500],"Units Sold": [ 200, 120, 150, 120, 210, 250, 220]
})创建一个字典来重命名列。键值对作为旧名称和新名称-
dictionary = {'Car': 'Car Name','Cubic Capacity': 'CC','Reg Price': 'Registration Price','Units Sold': 'Units Purchased'
}使用rename()并将字典设置为列-
dataFrame.rename(columns=dictionary, inplace=True)
示例
以下是代码-
import pandas as pd
#创建数据框
dataFrame = pd.DataFrame({"Car": ['BMW', 'Mustang', 'Tesla', 'Mustang', 'Mercedes', 'Tesla', 'Audi'],"Cubic Capacity": [2000, 1800, 1500, 2500, 2200, 3000, 2000],"Reg Price": [7000, 1500, 5000, 8000, 9000, 6000, 1500],"Units Sold": [ 200, 120, 150, 120, 210, 250, 220]
})
print"DataFrame ...\n",dataFrame
#创建一个字典来重命名列
#键值对作为旧名称和新名称
dictionary = {'Car': 'Car Name','Cubic Capacity': 'CC','Reg Price': 'Registration Price','Units Sold': 'Units Purchased'
}
#使用rename()并将字典设置为列
dataFrame.rename(columns=dictionary, inplace=True)
print"\nUpdated DataFrame ...\n",dataFrame输出结果这将产生以下输出-
DataFrame ...
Car Cubic Capacity Reg Price Units Sold
0 BMW 2000 7000 200
1 Mustang 1800 1500 120
2 Tesla 1500 5000 150
3 Mustang 2500 8000 120
4 Mercedes 2200 9000 210
5 Tesla 3000 6000 250
6 Audi 2000 1500 220
Updated DataFrame ...
Car Name CC Registration Price Units Purchased
0 BMW 2000 7000 200
1 Mustang 1800 1500 120
2 Tesla 1500 5000 150
3 Mustang 2500 8000 120
4 Mercedes 2200 9000 210
5 Tesla 3000 6000 250
6 Audi 2000 1500 220