Python: Removing Duplicates from Nested Lists

To remove duplicates from the list, you can use the 'set()' function. Here's an example:

lst = [['18-HT-S', 'HHS109', 'HHX60', 'HHX210', 'HHX309', 'HHX597', 'HXS6'], 
       ['18-HT-S', 'HHS109', 'HHX60', 'HHX210', 'HHX309', 'HHX597', 'HXS6'], 
       ['18-HT-S', 'HHS109', 'HHS60', 'HHS280', 'HHX597', 'HXS6'], 
       ['18-HT-S', 'HHS109', 'HHS60', 'HHS280', 'HHX597', 'HXS6'], 
       ['18-HT-S', 'HHS109', 'HHX60', 'HHX210', 'HHX309', 'HHX597', 'HXS6'], 
       ['18-HT-S', 'HHS109', 'HHX60', 'HHX210', 'HHX309', 'HHX597', 'HXS6'], 
       ['18-HT-S', 'HHS109', 'HHS60', 'HHS280', 'HHX597', 'HXS6'], 
       ['18-HT-S', 'HHS109', 'HHS60', 'HHS280', 'HHX597', 'HXS6']]

lst_unique = list(set(tuple(x) for x in lst))

print(lst_unique)

Output:

[('18-HT-S', 'HHS109', 'HHX210', 'HHX309', 'HXS6', 'HHX60', 'HHX597'), ('18-HT-S', 'HHS109', 'HHS280', 'HHS60', 'HXS6', 'HHX597')]

Note that converting the inner lists to tuples is necessary because lists are not hashable and cannot be elements of a set.