Request for Unique Value Analysis in DataFrame Columns - Python/Pandas/EDA

Hi, I need help to request an analysis of the following columns in DataFrame: 'Marital Status' (column position 2) 'Education' (column position 3) 'Has credit in default' (column position 4) 'Has housing loan' (column position 6) 'Has personal loan' (column position 7) 'Contact type' (column position 8) 'Last contact month' (column position 10) 'Outcome previous campaign' (column position 15) 'Subscribed deposit' (column position 16) These columns have the following positions: [2, 3, 4, 6, 7, 8, 10, 15, 16]. For each of these columns, I would like to see the unique values using the my_series.unique() method. How can I do this? Thank you very much!