Completed the course "Intro to Machine Learning" on Kaggle. https://www.kaggle.com/learn/certification/ppiron/intro-to-machine-learning

from bakery import assert_equal from dataclasses import dataclass @dataclass class Rectangle: length: int width: int def area(rect: Rectangle) -> int: return rect.length * rect.width box = Rectangle(5, 3) assert_equal(area(box), 15) I am getting confused which is function here and which is a class. What is the decorator here? Can somebody please explain this in simple words?

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