Python - Encapsulation and Data Protection
You want to protect a bank account balance so it cannot be changed directly. Which encapsulation approach is best?
You want to protect a bank account balance so it cannot be changed directly. Which encapsulation approach is best?
hard📝 Application Q15 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the need for protection
Bank balance should not be changed directly to avoid mistakes or fraud.Step 2: Apply encapsulation best practice
Use a private variable for balance and provide public methods to safely update it.Final Answer:
Use a private variable for balance and provide methods to deposit and withdraw -> Option AQuick Check:
Private variable + methods = safe data access [OK]
Quick Trick: Use private variables with methods to control changes [OK]
Common Mistakes:
- Making balance public and changing it anywhere
- Using global variables which are unsafe
- Not controlling how balance is updated
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