1. Overview
The issubset() method returns True if all elements of a set are present in another set (passed as an argument). If not, it returns False.
Set A is said to be the subset of set B if all elements of A are in B.
Here, set A is a subset of B.
The syntax of issubset() is:
A.issubset(B)
The above code checks if A is a subset of B.
2. Return Value from issubset()
issubset() returns
- True if A is a subset of B
- False if A is not a subset of B
3. Example: How issubset() works?
A = {1, 2, 3}
B = {1, 2, 3, 4, 5}
C = {1, 2, 4, 5}
# Returns True
print(A.issubset(B))
# Returns False
# B is not subset of A
print(B.issubset(A))
# Returns False
print(A.issubset(C))
# Returns True
print(C.issubset(B))
Output
True False False True
If you need to check if a set is a superset of another set, you can use issuperset() in Python.
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