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- Using a trace function to capture the locals() of the decorated function, instead of requiring the latter to return locals(), as in the older recipe. If you want to add an attribute to python class, you can use property() function or @property decorator. When you run the code, you can see __init__ of 'our_property' will be called 'fget' set to a reference to the 'getter' function of 'city'. To use the property decorator, we need to wrap it around any function / method. This article will tell you how to use @property decorator and property() function to achieve this. 7. python read-only class properties. @property is a built-in decorator in python language which is used to make functions like getters and setters in a class behave as class properties.. To understand the concept in a better way, let's take an example. Is there a dedicated way to get the number of items in a python `Enum`? @property Decorator in Python. We will define a property in this example class to demonstrate the usage of our previously defined property class or better 'our_decorator' class. In previous chapters, we saw the examples of methods, e.g. Python’s built-in @property decorator can make a class’s method-call like property-call. Python provides a built-in @property decorator which makes usage of getter and setters much easier in Object-Oriented Programming.. Properties are useful because they allow us to handle both setting and getting values in a programmatic way but still allow attributes to be accessed as attributes. ‘area’ and ‘cost’ in Listing 10.1, inside the class without any decorator with them.The ‘decorators’ adds the additional functionality to the methods, and will be discussed in details in Chapter 12.. A python @property decorator lets a method to be accessed as an attribute instead of as a method with a '()'.Today, you will gain an understanding of when it is really needed, in what situations you can use it and how to actually use it. After you define class attribute with property() function or @property decorator, your client code can invoke the class … How To Use Property Function / Decorator In Python Read More » 9. Using the Python Property Decorator. Python @property decorator: In this tutorial, you will find out about Python @property decorator; a pythonic way to use getters and setters in object-oriented programming. 26. The mai n objective of any decorator … There is an optional way to achieve setters/getters: @property decorator. The two method all has advantages and disadvantages, and the goal of using that is to make code simple. Methods, staticmethod and classmethod¶. Here’s a simple example: @property def fun(a, b): return a + b This is the same as: def fun(a, b): return a + b fun = property(fun) So here, we wrap property() around fun(), which is exactly what a decorator does! Below we have a class Student, which has 3 properties, namely fname, lname and fullname, where fullname is a concatenation of the first two properties. In this article, we reviewed the four benefits of using property decorators in Python. The refinement consists of: - Using a decorator (introduced in python 2.4) to "declare" a function in class scope as property. That is to say, the method call of foo.func() can be changed into foo.func.Besides @property decorator, there is also a built-in function property() can do the same thing. Python programming provides us an inherent @property decorator which makes utilization of getter and setters a lot simpler in Object-Oriented Programming. 11.2. The attribute 'city' is an instance of the 'our_property' class. 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