Union of two Sets

The Union Operation in sets combines two or more sets, returning a new set that contains all the unique elements from the combined sets. In Python, you can perform the union operation using the union() method or the | (pipe) operator.

Below is the example:

## Union in Sets
# The union operation in sets combines two or more sets, 
#   returning a new set that contains all the unique elements from the combined sets

set1 = {1,3,5,7}
set2 = {2,4,6,7,8}

# Using union() method
unionResult = set1.union(set2)
print("Union using union() method:", unionResult)
# Output: Union using union() method: {1, 2, 3, 4, 5, 6, 7, 8}

# Multiple sets union
unionResult = set1.union(set2, set3)
print("Union using union() method:", unionResult)
# Output: Union using union() method: {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}

# Using | (pipe) operator
unionResult = set1 | set2
print("Union using | operator:", unionResult)
# Output: Union using | operator: {1, 2, 3, 4, 5, 6, 7, 8}

Output of above code is:

In the above example, we have two sets, set1 and set2. The union operation combines the elements from both sets, removing any duplicates, and creates a new set with all the unique elements.

Using the union() method, we invoke it on one set (set1) and pass the other set (set2) as the argument. The union() method returns a new set that contains all the elements from set1 and set2.

Using the | operator, we simply apply the operator between the two sets (set1 | set2). The operator performs the union operation and returns a new set with the combined elements.

Both approaches yield the same result, which is the union of set1 and set2, resulting in a set containing the elements {1, 2, 3, 4, 5, 6, 7, 8}.

The union operation is useful when you want to merge multiple sets together while ensuring that only unique elements are included.