The Dog class specifies that a name and an age are necessary for defining a dog, but it doesn’t contain the name or age of any specific dog. In this tutorial, you’ll create a Dog class that stores some information about the characteristics and behaviors that an individual dog can have.Ī class is a blueprint for how something should be defined. Classes define functions called methods, which identify the behaviors and actions that an object created from the class can perform with its data. Classes vs InstancesĬlasses are used to create user-defined data structures.
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McCoy’s age.Ī great way to make this type of code more manageable and more maintainable is to use classes. In the mccoy list above, the age is missing, so mccoy will return "Chief Medical Officer" instead of Dr. Second, it can introduce errors if not every employee has the same number of elements in the list. If you reference kirk several lines away from where the kirk list is declared, will you remember that the element with index 0 is the employee’s name? There are a number of issues with this approach.įirst, it can make larger code files more difficult to manage.
The key takeaway is that objects are at the center of object-oriented programming in Python, not only representing the data, as in procedural programming, but in the overall structure of the program as well.
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OOP models real-world entities as software objects that have some data associated with them and can perform certain functions.Īnother common programming paradigm is procedural programming, which structures a program like a recipe in that it provides a set of steps, in the form of functions and code blocks, that flow sequentially in order to complete a task. Put another way, object-oriented programming is an approach for modeling concrete, real-world things, like cars, as well as relations between things, like companies and employees, students and teachers, and so on. Or it could represent an email with properties like a recipient list, subject, and body and behaviors like adding attachments and sending. Object-oriented programming is a programming paradigm that provides a means of structuring programs so that properties and behaviors are bundled into individual objects.įor instance, an object could represent a person with properties like a name, age, and address and behaviors such as walking, talking, breathing, and running. What Is Object-Oriented Programming in Python?
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