[Solved] In the following code snippet, what is the bug?if not book_id: delete book return 'Deleted' else: return 'Book ID missing' | LLD

LLD - Design — Library Management System

In the following code snippet, what is the bug?

if not book_id:
    delete book
    return 'Deleted'
else:
    return 'Book ID missing'

AIt returns 'Deleted' when book_id exists

BIt deletes book when book_id is missing

CIt deletes the book when book_id exists

DIt has syntax errors

Step-by-Step Solution

Solution:

Step 1: Understand the condition logic
Code deletes book if book_id is missing (not book_id is true).
Step 2: Identify the bug
Deleting without a valid book_id is wrong; logic is inverted.
Final Answer:
It deletes book when book_id is missing -> Option B
Quick Check:
Delete requires valid book_id [OK]

Quick Trick: Check condition logic carefully for negations [OK]

Common Mistakes:

MISTAKES

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In the following code snippet, what is the bug?