Given a class Rectangle with attributes width and height, write the correct way to double the width attribute value.

hard📝 Application Q9 of 15

Python - Classes and Object Lifecycle

Given a class Rectangle with attributes width and height, write the correct way to double the width attribute value.

ABoth A and C

Brect.width = rect.width * 2

Crect.width *= 2

Drect.set_width(rect.width * 2)

Step-by-Step Solution

Solution:

Step 1: Understand attribute modification
You can change an attribute by assigning a new value, either by multiplying and assigning or using the shorthand operator.
Step 2: Evaluate options
rect.width = rect.width * 2 uses explicit multiplication and assignment. rect.width *= 2 uses the shorthand operator. Both correctly double the width. rect.set_width(rect.width * 2) assumes a method that may not exist.
Final Answer:
Both A and C -> Option A
Quick Check:
Both assignment styles work for attribute modification = Both A and C [OK]

Quick Trick: Use *= or = with expression to modify attributes [OK]

Common Mistakes:

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