The issubset() method returns True if set A is the subset of B, i.e. if all the elements of set A are present in set B . Else, it returns False.
Example
A = {1, 2, 3}
B = {1, 2, 3, 4, 5}
# all items of A are present in B
print(A.issubset(B))
# Output: True
issubset() Syntax
The syntax of the issubset() method is:
A.issubset(B)
Here, A and B are two sets.
issubset() Parameter
The issubset() method takes a single argument:
- B - a set that is a superset of A, which means B has all the items of set A.
issubset() Return Value
The issubset() method returns:
True- if set A is a subset of BFalse- if set A is not a subset of B
Example: Python Set issubset()
A = {'a', 'c', 'e'}
B = {'a', 'b', 'c', 'd', 'e'}
print('A is subset of B:', A.issubset(B))
print('B is subset of A:', B.issubset(A))
Output
A is subset of B: True B is subset of A: False
In the above example, we have used the issubset() method to check if sets A and B are subsets of each other.
Since all elements of A are present in B, the issubset(B) method returns True. On the other hand, set B is not a subset of A. Thus, we get the False with issubset(A).
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