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Consider the following Python code using the Template Method Pattern with a hook method wants_sugar() that returns False in the subclass. What is the exact output when calling Tea().prepare()?

easy🧾 Trace Q3 of Q15

OOP & Design Patterns - Template Method Pattern - Define Skeleton, Override Steps

Consider the following Python code using the Template Method Pattern with a hook method wants_sugar() that returns False in the subclass. What is the exact output when calling Tea().prepare()?

ABoil water Steep tea Pour into cup

BBoil water Steep tea Add sugar Pour into cup

CBoil water Steep tea Add sugar

DSteep tea Boil water Pour into cup

Step-by-Step Solution

Solution:

Step 1: Understand the hook method
The hook wants_sugar() returns False, so sugar addition is skipped.
Step 2: Follow the template method steps
Boil water, steep tea, check hook (False), skip sugar, pour into cup.
Final Answer:
Option A -> Option A
Quick Check:
Hook false means skip sugar step [OK]

Quick Trick: Hook false skips optional step; sugar not added [OK]

Common Mistakes:

MISTAKES

Assuming sugar is always added regardless of hook
Mixing order of steps in output
Ignoring the hook method's effect

Trap Explanation:

PITFALL

Assuming hook always returns True leads to incorrect output including sugar.

Interviewer Note:

CONTEXT

Tests ability to trace Template Method with hook methods.

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