 # Python Set issubset()

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 B
• `False`- 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)`.