You have a class with a protected dictionary attribute _settings. To allow subclasses to safely update this dictionary without replacing it, which method is best?
hard📝 Application Q8 of 15
Python - Encapsulation and Data Protection
You have a class with a protected dictionary attribute _settings. To allow subclasses to safely update this dictionary without replacing it, which method is best?
AAllow direct assignment to <code>_settings</code> from subclasses.
BProvide a method that updates keys in <code>_settings</code> instead of assigning a new dictionary.
CMake <code>_settings</code> a public attribute to simplify access.
DUse double underscore prefix to make <code>_settings</code> private.
Step-by-Step Solution
Solution:
Step 1: Understand protected attribute usage
Protected attributes are intended for internal use and subclass access.
Step 2: Safe update approach
Providing a method to update keys inside the dictionary prevents accidental replacement of the entire dictionary.
Step 3: Analyze options
Provide a method that updates keys in _settings instead of assigning a new dictionary. is best practice; B risks replacing the dictionary; C exposes internal state; D makes attribute private, restricting subclass access.
Final Answer:
Provide a method that updates keys in _settings instead of assigning a new dictionary. -> Option B
