Python - How to rename multiple column headers in a Pandas DataFrame with Dictionary?

Python Server Side Programming Programming

To rename multiple column headers, use the rename() method and set the dictionary in the columns parameter. At first, let us create a 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]
})

Creating a dictionary to rename columns. The key and value pairs as old name and new name −

dictionary = {'Car': 'Car Name','Cubic Capacity': 'CC','Reg Price': 'Registration Price','Units Sold': 'Units Purchased'
}

Use rename() and set the dictionary as columns −

dataFrame.rename(columns=dictionary, inplace=True)

Example

Following is the code −

import pandas as pd

# creating 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]
})

print"DataFrame ...\n",dataFrame

# creating a dictionary to rename columns
# key and value pairs as old name and new name
dictionary = {'Car': 'Car Name','Cubic Capacity': 'CC','Reg Price': 'Registration Price','Units Sold': 'Units Purchased'
}

# using rename() and setting the dictionary as columns
dataFrame.rename(columns=dictionary, inplace=True)

print"\nUpdated DataFrame ...\n",dataFrame

Output

This will produce the following output −

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

AmitDiwan

Published on 21-Sep-2021 07:55:31

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