[Solved] Identify the error in this code snippet:class Container: def __init__(self): self._items = [1, 2, 3] def get_items(self): return self.__items c = Container() print(c.get_items()) | Python

Python - Encapsulation and Data Protection

Identify the error in this code snippet:

class Container:
    def __init__(self):
        self._items = [1, 2, 3]

    def get_items(self):
        return self.__items

c = Container()
print(c.get_items())

AThere is no error; the code will print [1, 2, 3].

BThe attribute _items should be accessed as self._items, not self.__items.

CThe attribute _items is not initialized properly.

DThe method tries to access a non-existent private attribute __items.

Step-by-Step Solution

Solution:

Step 1: Understand attribute naming
Single underscore _items is different from double underscore __items.
Step 2: Analyze method get_items
The method tries to return self.__items, which does not exist because the attribute is named _items.
Step 3: Result
This causes an AttributeError at runtime.
Final Answer:
The method tries to access a non-existent private attribute __items. -> Option D
Quick Check:
Double underscore triggers name mangling; attribute name mismatch [OK]

Quick Trick: Double underscore causes name mangling; attribute name mismatch [OK]

Common Mistakes:

MISTAKES

Confusing single and double underscore attributes
Assuming __items and _items are the same
Ignoring AttributeError from wrong attribute name

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More Python Quizzes

Identify the error in this code snippet:

Step 1: Understand attribute naming

Step 2: Analyze method get_items

Step 3: Result

Final Answer:

Quick Check:

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