fronzenset() to make elements immutable of an iterator input in python

fronzenset(my_iterable)

my_iterable : This is an iterable object like List, tuple, set Output is unchangeable frozenset object. This object is immutable ( what is immutable ? )

Using List

my_list=[1,2,3]
my_list=frozenset(my_list)
print(my_list) # frozenset({1, 2, 3})

We will try to change one element

my_list=[1,2,3]
my_list=frozenset(my_list)
my_list[1]=8
print(my_list) # frozenset({1, 2, 3})

Above code will generate error saying
TypeError: 'frozenset' object does not support item assignment

Using tuple

my_tuple=(1,2,3)
my_tuple=frozenset(my_tuple)
my_tuple[1]=5

Above code will generate error saying
TypeError: 'frozenset' object does not support item assignment

One more example

my_tuple=(1,2,3)
my_tuple +=(4,5)
print(my_tuple)
my_tuple=frozenset(my_tuple)
my_tuple +=(6,7)

Above code will generate error saying
TypeError: unsupported operand type(s) for +=: 'frozenset' and 'tuple'

Use Cases for frozenset()

As Dictionary Keys: Since frozensets are immutable and hashable, they can be used as keys in dictionaries, unlike regular sets.
As Elements in Sets: Frozensets can be elements of other sets because they are hashable, while regular sets cannot.
Data Integrity: When we need to ensure that a collection of items remains unchanged throughout the lifetime of a program, frozensets are a useful tool.

In summary, frozenset() is a built-in Python function used to create immutable and hashable sets. It is particularly useful when you need a collection of unique elements that should not change over time, or when you require a set-like object to be used as a dictionary key or a set element.

Python

set list dictionary

Subhendu Mohapatra

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frozenset() : creates an immutable version of a set

Use Cases for frozenset()

Subhendu Mohapatra