What is the frozenset() method in Python?
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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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