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$ curl repovive.com/roadmaps/python/tuples-sets/set-union

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$ curl repovive.com/roadmaps/python/tuples-sets/set-union

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Set Union - Tuples & Sets | Python | Repovive

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Python9 sections · 462 units23h total

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Set Union

Combining two sets

Union combines all elements from both sets:

a = {1, 2, 3}
b = {3, 4, 5}

combined = a | b           # {1, 2, 3, 4, 5}
combined = a.union(b)      # Same result

The | operator and .union() method do the same thing. Elements appear once even if they were in both sets.

Think of union as "everything from either set." If you have students in class A and students in class B, the union is all students who are in at least one class.