Frozen Sets
Set Operations
Set operations in Python leverage the power of the set data structure for efficient manipulation of unique elements. Key operations include:
- Union: Combines elements from two or more sets.
set1 = {1, 2, 3}
set2 = {3, 4, 5}
union_set = set1 | set2 # or set1.union(set2)
print(union_set) # Output: {1, 2, 3, 4, 5}
- Intersection: Returns common elements between sets.
intersection_set = set1 & set2 # or set1.intersection(set2)
print(intersection_set) # Output: {3}
- Difference: Elements in the first set but not in the second.
difference_set = set1 - set2 # or set1.difference(set2)
print(difference_set) # Output: {1, 2}
- Symmetric Difference: Elements in either set, but not in both.
symmetric_difference_set = set1 ^ set2 # or set1.symmetric_difference(set2)
print(symmetric_difference_set) # Output: {1, 2, 4, 5}
- Subset and Superset checks:
set3 = {1,2}
is_subset = set3.issubset(set1) # or set3 <= set1
is_superset = set1.issuperset(set3) # or set1 >= set3
print(is_subset) #Output: True
print(is_superset) #Output: True
Set Theory Basics (Python Sets)
Other relevant notes: