Python set Method - issubset()

The issubset() method in Python is used to check if a set is a subset of another set. It returns True if all the elements of the first set are also present in the second set, and False otherwise.

The syntax for the issubset() method is as follows:

set1.issubset(set2)

Here, set1 is the set that we want to check if it is a subset of set2. The method returns True if all the elements of set1 are also present in set2, and False otherwise.

Example:

# Creating two sets
set1 = {1, 2, 3}
set2 = {1, 2, 3, 4, 5}

# Checking if set1 is a subset of set2
print(set1.issubset(set2))   # Output: True

# Creating another set
set3 = {4, 5, 6}

# Checking if set1 is a subset of set3
print(set1.issubset(set3))   # Output: False

In the above example, the issubset() method is used to check if the set set1 is a subset of set2. Since all the elements of set1 (i.e., 1, 2, and 3) are also present in set2, the method returns True. The method is also used to check if the set set1 is a subset of set3. Since the element 3 is not present in set3, the method returns False.