python class setter and getter
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in python, setters and getters are methods used to control access to attributes of a class. they are commonly used to enforce encapsulation and ensure proper handling of class attributes. setters allow you to set the value of an attribute, while getters allow you to retrieve the value of an attribute. this tutorial will guide you through the implementation and usage of setters and getters in python classes with code examples.
setter methods are used to set the value of an attribute within a class. they provide a way to encapsulate the attribute's value and apply validation or other operations before setting it. in python, setter methods are defined using the @property decorator along with a setter decorator, @attribute_name.setter.
let's illustrate this with an example:
in the above example, the name attribute is encapsulated using a getter and a setter method. the setter method checks if the value being assigned is a string and raises a valueerror if it is not.
getter methods are used to retrieve the value of an attribute from a class. they provide a way to access the attribute's value while encapsulating it within the class.
here's an example demonstrating the usage of getter methods:
in the circle class example, the radius attribute is encapsulated using both getter and setter methods. additionally, a getter method is defined for the area attribute, which calculates the area of the circle based on the radius.
setters and getters provide a powerful way to control access to attributes within python classes. they allow you to enforce encapsulation, apply validation rules, and perform operations when accessing or modifying attributes. by using setters and getters, you can create more robust and maintainable code in your python applications.
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