You want to extend a parent class method process_data to add timing logs before and after the parent's processing. Which approach is best?

hard🚀 Application Q8 of Q15

Python - Inheritance and Code Reuse

You want to extend a parent class method process_data to add timing logs before and after the parent's processing. Which approach is best?

ACopy parent's <code>process_data</code> code and add timing logs in child

BOverride <code>process_data</code> in child, call <code>super().process_data()</code> between timing logs

CCall parent's <code>process_data</code> outside the child class

DUse <code>super.process_data()</code> without parentheses in child

Step-by-Step Solution

Solution:

Step 1: Understand method extension
To add behavior before and after the parent's method, override it in the child.
Step 2: Use super() correctly
Call super().process_data() inside the child method between timing logs.
Step 3: Avoid code duplication
Copying parent's code duplicates logic and is error-prone.
Final Answer:
Override process_data in child, call super().process_data() between timing logs -> Option B
Quick Check:
Use super() inside overridden method to extend behavior [OK]

Quick Trick: Override method, call super() inside to extend with extra code [OK]

Common Mistakes:

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