OOP with Python - Intro to OOP

Encapsulation is a software design practice of bundling data and the methods that operate on that data.

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Answer explanation

Encapsulation is one of the 3 pillars of object-oriented programming.

The other two are:

- Inheritance

- Polymorphism

We will look at both these concepts later.

Object and Class are different terms describing the same concept.

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Answer explanation

Object - an entity that holds data as attributes and is of a class.

Class - a blueprint for an object.

In the image above we can see an example of the relationship.

Dog is a class that defines a blueprint of data and functionality.

Bobby is an object or instance created from the Dog class.

Attributes encode the state of an object and are represented by variables.

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Answer explanation

Attribute - any object value.

In the example the object Bobby has five attributes:

- Yellow

- Brown

- 17 in

- 35 in

- 24 pounds

Methods encode the behaviour of an object and are represented by functions.

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Answer explanation

Method - a "callable attribute" defined in a class and can be called by an object.

In the example the object Dag has four methods:

- Sit

- Lay Down

- Shake

- Come

A programming language can be either object-oriented or procedural, but NOT both.

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Answer explanation

Python can be BOTH procedural and object-oriented.

A large number of programming languages can use both and are known as multi-paradigm languages.

Object is an abstract template describing the general states and behaviours.

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Answer explanation

Object - an entity that holds data as attributes and is of a class.

Class - a blueprint or an abstract template describing the general states and behaviours for an object.

In the image above we can see an example of the relationship.

Dog is a class that defines a blueprint of data and functionality.

Bobby is an object or instance created from the Dog class.