keep the unique value for each person.
I have DF
| name | size | 
|---|---|
| john | 16 | 
| khaled | 15 | 
| john | 15 | 
| Alex | 16 | 
| john | 16 | 
I need in the output to remove the duplicated value in color for each name.
| name | size | 
|---|---|
| john | 16 | 
| khaled | 15 | 
| john | 15 | 
| Alex | 16 | 
What is the best function or library to do that?
 
    