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Getting unique values from a list in Python

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Set Operations

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Cookbooks

schedule Jul 1, 2022

Last updated

local_offer Python

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The most efficient way to obtain unique values from a list is to convert it to a set.


        
        
            
                
                
                    my_list = ['Dog', 'Cat', 'Bird', 'Dog']
my_set = set(my_list)
print(my_set)
                
            
            {'Dog', 'Bird', 'Cat'}

NOTE

By definition, a set only contains unique values and does not allow for duplicates.

If you need to use the result as a list again we can simply convert the set back to a list:


        
        
            
                
                
                    new_list = list(my_set)
print(new_list)
                
            
            ['Dog', 'Bird', 'Cat']

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Published by Arthur Yanagisawa

Edited by 0 others

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