[Solved] Given this class, how would you modify it to support chaining additions like a + b + c?class Box: def __init__(self, size): self.size = size def __add__(self, other): return Box(self.size + other.... | Python

Python - Magic Methods and Operator Overloading

Given this class, how would you modify it to support chaining additions like a + b + c?

class Box:
    def __init__(self, size):
        self.size = size
    def __add__(self, other):
        return Box(self.size + other.size)

ANo change needed; chaining works as is

BModify __add__ to return self instead of new Box

CAdd __radd__ method to support chaining

DChange __init__ to accept multiple sizes

Step-by-Step Solution

Solution:

Step 1: Understand chaining with __add__
Since __add__ returns a new Box instance, expressions like a + b + c call __add__ repeatedly on Box objects.
Step 2: Confirm chaining behavior
Each addition returns a Box, so chaining works without changes.
Final Answer:
No change needed; chaining works as is -> Option A
Quick Check:
Returning new Box enables chaining [OK]

Quick Trick: Return new instance to enable chaining [OK]

Common Mistakes:

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Given this class, how would you modify it to support chaining additions like a + b + c?