The __post_init__ Hook

Medium Modern Python OOP Features

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Problem Statement

Create a `Rectangle` dataclass with `width` and `height`. Add an `area` attribute using `field(init=False)`. Use the `__post_init__` method to calculate and set the `area` as `width * height`. Print ‘Area: [area]’.

Input Format

Two space-separated integers.

Output Format

Print the calculated area.

Constraints

None

Sample Input

5 10

Sample Output

Area: 50

Explanation

The `__post_init__` hook is executed automatically right after the generated `__init__` method finishes, allowing complex initializations.

Starter Code

from dataclasses import dataclass, field

# Define Rectangle dataclass and __post_init__

if __name__ == '__main__':
    w, h = map(int, input().split())
    # Instantiate and print the area
    pass

Limits

Time Limit: 1s
Memory Limit: 256MB

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