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Getting unique values from a list in Python

Operations
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Set Operations
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Cookbooks
schedule Jul 1, 2022
Last updated
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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
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