[Solved] A developer wrote this code snippet to delete a book:if book_id: delete book return 'Deleted'What is the main issue with this code? | LLD

LLD - Design — Library Management System

A developer wrote this code snippet to delete a book:

if book_id:
    delete book
return 'Deleted'

What is the main issue with this code?

AIt deletes the book even if book_id does not exist

BIt returns 'Deleted' even if no book was deleted

CIt returns nothing if book_id is missing

DIt uses wrong syntax for deletion

Step-by-Step Solution

Solution:

Step 1: Analyze the condition and return
The code checks if book_id is truthy, deletes book, then returns 'Deleted' regardless.
Step 2: Identify the problem
If book_id is false or book does not exist, it still returns 'Deleted' which is misleading.
Final Answer:
It returns 'Deleted' even if no book was deleted -> Option B
Quick Check:
Return message must reflect actual deletion [OK]

Quick Trick: Return after deletion must confirm success [OK]

Common Mistakes:

MISTAKES

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A developer wrote this code snippet to delete a book: