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Python Programming - Encapsulation - Discussion

Discussion Forum : Encapsulation - General Questions (Q.No. 77)
Encapsulation
77.
Consider the following Python code: 
class Product:
    def __init__(self, name, __price):
        self.name = name
        self.__price = __price

    def set_discount(self, discount):
        if 0 < discount < 1:
            self.__price *= (1 - discount)
What is the purpose of the set_discount() method?
To retrieve the price of the product
To set a new discount for the product with validation
To create a new instance of the class
To expose all internal details of the class
Answer: Option
Explanation:
The set_discount() method allows setting a new discount for the product with validation, demonstrating encapsulation.
Discussion:
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