Sets

A set is an unordered collection of unique items.

unique_numbers = {1, 2, 3, 3, 2}
print(unique_numbers)  # Output: {1, 2, 3}

Sets are useful for removing duplicates and performing set operations like union, intersection, etc.

set1 = {1, 2, 3}
set2 = {3, 4, 5}
print(set1.union(set2))       # {1, 2, 3, 4, 5}
print(set1.intersection(set2)) # {3}