[Solved] Identify the error in this code related to encapsulation:class BankAccount: def __init__(self): self.__balance = 100 def deposit(self, amount): self.__balance += amount acc = BankAccount() acc.... | Python

Python - Encapsulation and Data Protection

Identify the error in this code related to encapsulation:

class BankAccount:
    def __init__(self):
        self.__balance = 100
    def deposit(self, amount):
        self.__balance += amount

acc = BankAccount()
acc.__balance += 50
print(acc.__balance)

ANo error, prints 150

BSyntaxError due to private variable

CAttributeError on acc.__balance access

DTypeError when adding integer

Step-by-Step Solution

Solution:

Step 1: Understand private variable access
__balance is private and cannot be accessed directly outside the class.
Step 2: Analyze acc.__balance += 50
This line tries to access private variable directly, causing AttributeError.
Final Answer:
AttributeError on acc.__balance access -> Option C
Quick Check:
Direct private variable access = AttributeError [OK]

Quick Trick: Modify private variables only via class methods [OK]

Common Mistakes:

Trying to change private variables directly
Expecting no error on direct access
Confusing syntax error with attribute error

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Identify the error in this code related to encapsulation:

Step 1: Understand private variable access

Step 2: Analyze acc.__balance += 50

Final Answer:

Quick Check:

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