Join Sets
2 min read ·
Joining sets means combining elements from two or more sets.
Because sets store unique values only, joining sets automatically removes duplicates.
Python supports multiple set operations for joining and comparing sets.
Join Sets Using Union (|)
The union operator combines all unique elements.
Join Sets Using union()
Returns a new set containing all elements.
Join Multiple Sets
Update Set with Another Set (update())
Modifies the original set.
Join Sets Using Loop
Join Sets Using |= Operator
Join Sets with Different Data Types
Join Frozen Sets
Frozen sets cannot be modified.
Common Mistakes
Expecting Order
Order is not guaranteed.
Using + Operator
Sets do not support concatenation.
Performance Note
- Set union is very fast
- Best used for deduplication
update()is efficient for large datasets