Python · Theory

frozenset()

Theory

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frozenset() is built into Python. You do not import it. Freshers only need one honest call and the printed result — not a long definition.

frozenset() — output — frozenset({1, 2}). Immutable set.

Wrong type often raises TypeError. Empty values matter for bool/all/any. Don’t mix frozenset up with a similar name (sorted vs sort, int vs float).

Exam tip

Call frozenset() once and say what prints.

# frozenset()
s = frozenset([1, 2, 2])
print(s)

frozenset() — output: frozenset({1, 2}). Immutable set.