How to Set a Column as Dataframe Index in Pandas (Python)

You can set a column as index using the function .set_index() in Pandas.

import pandas as pd
car_data = {'Unique_Number': ['12', '89','63','43','85','11','44','33'], 
    'Brand': ['Tesla', 'Tesla','Tesla','Ford','Ford','Ford','Toyota','Toyota'], 
     'Location': ['CA', 'CA','NY','MA','CA','WA','CA','TX'],
    'Year':['2019','2018','2020','2019','2016','2010','2018','2021']}
car_data=pd.DataFrame(data=car_data)
print(car_data)
  Unique_Number   Brand Location  Year
0            12   Tesla       CA  2019
1            89   Tesla       CA  2018
2            63   Tesla       NY  2020
3            43    Ford       MA  2019
4            85    Ford       CA  2016
5            11    Ford       WA  2010
6            44  Toyota       CA  2018
7            33  Toyota       TX  2021
#set unique_number as the index
car_data=car_data.set_index('Unique_Number')
print(car_data)
                Brand Location  Year
Unique_Number                       
12              Tesla       CA  2019
89              Tesla       CA  2018
63              Tesla       NY  2020
43               Ford       MA  2019
85               Ford       CA  2016
11               Ford       WA  2010
44             Toyota       CA  2018
33             Toyota       TX  2021