What is the frozenset() method in Python?
Overview
The frozenset() method is an inbuilt function in Python that converts an iterable object into an immutable object.
Syntax
The syntax of this method is as follows:
frozenset([iterable_object])
Parameter
The frozenset() function takes one optional parameter, an iterable object.
Return value
The return value is an immutable iterable object.
Example 1
When frozenset() is provided no parameter, it returns as it is without raising any error:
# no parameterf_set0 = frozenset()print('The frozen set with no parameter:', f_set0)# setintegers = {1, 2, 3, 4, 5}f_set1 = frozenset(integers)f_set1.add(10)print('The frozen set is:', f_set1)
Example 2
In the second example, f_set1 becomes unmodifiable by the application of frozenset() to integers. This is why, when a number is tried to be added to f_set1, it does not recognize the attribute add:
# listbands = ['BTS', '1D', 'GOT7', 'TXT']f_set2 = frozenset(bands)f_set2.append('NCT')print('The frozen set is:', f_set2)
Similarly, frozenset() makes f_set2 unmodifiable and hence it raises the AttributeError.
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