The intersection() function in python helps to find the common elements in the sets. This function returns a new set that contains the elements that common in all comparison sets.
A.intersection(*other_sets) #where A is a set of any iterables, like strings, lists, and dictionaries.
The intersection() function can take many set parameters for the comparison(* indicates) and separate the sets with commas. We can also find the intersection of sets using & operator(intersection operator).
| Parameter | Description | Required / Optional |
|---|---|---|
| A | The set to search for equal items in | Required |
| other_sets | The other set to search for equal items. | Optional |
The return value is always a set. If no parameters are passed, it returns a shallow copy of the set.
| Input | Return Value |
|---|---|
| sets | a set with common elements |
A = {'a', 'b', 'c', 'd'}
B = {'c', 'e', 'f', 'a'}
C = {'d', 'f', 'a', 'g'}
print(A.intersection(B))
print(B.intersection(C))
print(A.intersection(C))
print(C.intersection(A, B))
Output:
{'a', 'c'}
{'f', 'a'}
{'a', 'd'}
{'a'}
A = {'a', 'b', 'c', 'd'}
B = {'c', 'e', 'f', 'a'}
C = {'d', 'f', 'h', 'g'}
print(A & B)
print(B & C)
print(A & C)
print(A & B & C)
Output:
{'a', 'c'}
{'f'}
{'d'}
{}
