# issubset() in python

• Difficulty Level : Basic
• Last Updated : 05 Oct, 2021

Python set issubset() method returns True if all elements of a set A are present in another set B which is passed as an argument and returns false if all elements not present.

### Python set issubset() Syntax:

```A.issubset(B)
checks whether A is a subset of B or not.```

### Python set isubset() Return:

`returns true if A is a subset of B otherwise false.` Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.

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## Python

 `# Python program to demonstrate working of``# issubset().` `A ``=` `{``4``, ``1``, ``3``, ``5``}``B ``=` `{``6``, ``0``, ``4``, ``1``, ``5``, ``0``, ``3``, ``5``}` `# Returns True``print``(A.issubset(B))` `# Returns False``# B is not subset of A``print``(B.issubset(A))`

Output:

```True
False```

## Python

 `# Another Python program to demonstrate working``# of issubset().``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```

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