[Solved] Identify the error in this code related to object lifecycle:class Sample: def __init__(self): print('Init called') def __del__(self): print('Del called') obj = Sample() obj = None print('Done') | Python

Python - Classes and Object Lifecycle

Identify the error in this code related to object lifecycle:

class Sample:
    def __init__(self):
        print('Init called')
    def __del__(self):
        print('Del called')

obj = Sample()
obj = None
print('Done')

ADestructor __del__ will not be called because obj is set to None

BSyntax error in class definition

CNo error; destructor will be called when obj is set to None

DConstructor __init__ will not be called

Step-by-Step Solution

Solution:

Step 1: Understand what happens when obj is set to None
Setting obj = None removes the reference to the Sample object, so it becomes eligible for garbage collection.
Step 2: Confirm destructor call behavior
When no references remain, __del__ is called, so 'Del called' will print before 'Done'.
Final Answer:
No error; destructor will be called when obj is set to None -> Option C
Quick Check:
Destructor runs when object has no references [OK]

Quick Trick: Destructor runs when last reference is removed [OK]

Common Mistakes:

MISTAKES

Thinking setting variable to None skips destructor
Confusing syntax errors with lifecycle behavior
Assuming constructor is skipped

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Identify the error in this code related to object lifecycle:

Step 1: Understand what happens when obj is set to None

Step 2: Confirm destructor call behavior

Final Answer:

Quick Check:

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