Frozenset immutability demonstration: Python code example

Last update on April 23 2025 12:57:42 (UTC/GMT +8 hours)

8. Frozenset Immutability Test

Write a Python program that demonstrates the immutability of a frozenset by attempting to add or remove elements from it.

Sample Solution:

Code:

def main():
    original_frozenset = frozenset([1, 2, 3, 4, 5, 6])

    # Attempt to add an element to the frozenset
    try:
        modified_frozenset = original_frozenset.add(7)
    except AttributeError:
        print("It is not possible to add an element to a frozenset!")

    # Attempt to remove an element from the frozenset
    try:
        modified_frozenset = original_frozenset.remove(2)
    except AttributeError:
        print("It is not possible to remove an element from a frozenset!")

if __name__ == "__main__":
    main()

Output:

It is not possible to add an element to a frozenset!
It is not possible to remove an element from a frozenset!

In the exercise above, we are trying to use the "add()" and "remove()" methods to modify the original_frozenset. However, both of these operations will raise an "AttributeError" because a 'frozenset' does not have these methods due to its immutability.

Flowchart:

For more Practice: Solve these Related Problems:

Write a Python program to attempt adding an element to a frozenset, then catch and display the resulting exception message.
Write a Python script to demonstrate that removing an element from a frozenset is not allowed by triggering and handling a TypeError.
Write a Python program to show the immutability of a frozenset by using it as a key in a dictionary and then attempting to modify it.
Write a Python function that tries to modify a frozenset and returns a custom error string indicating that the operation is not permitted.

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