[Solved] Identify the bug in the following Room class code:class Room: def __init__(self, number): number = number self.is_available = True | LLD

LLD - Design — Hotel Booking System

Identify the bug in the following Room class code:

class Room:
    def __init__(self, number):
        number = number
        self.is_available = True

AThe is_available attribute should be set to False initially

BThe assignment should be self.number = number instead of number = number

CThe __init__ method is missing a return statement

DThe class should inherit from a base Room class

Step-by-Step Solution

Solution:

Step 1: Analyze attribute assignment
The line 'number = number' assigns the parameter to itself, not to an instance variable.
Step 2: Correct assignment
It should be 'self.number = number' to store the value in the instance attribute.
Step 3: Other options
is_available being True initially is valid; __init__ does not require a return; inheritance is not mandatory here.
Final Answer:
The assignment should be self.number = number instead of number = number -> Option B
Quick Check:
Instance variables require self prefix [OK]

Quick Trick: Instance variables must be assigned with self. prefix [OK]

Common Mistakes:

MISTAKES

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