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.