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Python - join two sets

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Created by:
Isaiah89
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In this article, we would like to show you how to join two sets in Python.

1. Using union() method

In this example, we use union() method to create a new set with all items from the two existing sets.

my_set1 = {'A', 'B'}
my_set2 = {'C', 'D'}

my_set3 = my_set1.union(my_set2)

print(my_set3)  # {'C', 'A', 'B', 'D'}

Output:

{'C', 'A', 'B', 'D'}

2. Using update() method

In this example, we use update() method to add the items from my_set2 to my_set1.

my_set1 = {'A', 'B'}
my_set2 = {'C', 'D'}

my_set1.update(my_set2)

print(my_set1)  # {'B', 'A', 'D', 'C'}

Output:

{'B', 'A', 'D', 'C'}

Note:

Both presented methods exclude duplicate elements.

Python - set (popular problems)

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