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In: Computer Science

In Python What is a class? What is a property as it relates to a class?...

In Python

What is a class?
What is a property as it relates to a class?
What is a method as it relates to a class?
What is an object?
How do you create an object?
What is an instance variable versus a class level variable?
What is a constructor?
Is a constructor always required? Does it depend on the language?
What is and what is the benefit of inheritance?
What is and what is the benefit of encapsulation?
What is and what is the benefit of polymorphism?
What is a Getter and Setter.....what are their purpose as it relates to encapsulation?

Solutions

Expert Solution

What is a class?

A class is a collection of method and variables. It is a blueprint that defines the data and behavior of a type.

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What is a property as it relates to a class?

Python @property is one of the built-in decorators. The main purpose of any decorator is to change your class methods or attributes in such a way so that the user of your class no need to make any change in their code.

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What is a method as it relates to a class?

A function that's part of a class is a method.

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What is an object?

It is a basic unit of class and it has the behaviour of the class.

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How do you create an object?

class ClassName():

# class definition

def main():

MyObject = ClassName()

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What is an instance variable versus a class level variable?

Instance variables are variables used for data that is unique to a particular instance.

Class Variables are variables that are shared by all instances of a class.

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What is a constructor?

A constructor is a special kind of method that Python calls when it instantiates an object using the definitions found in your class.

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Is a constructor always required? Does it depend on the language?

No, constructor is not always required.

A default (no-argument) constructor is automatically created only when you do not define any constructor yourself.

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What is and what is the benefit of inheritance?

Inheritance is a feature of object-oriented programming that allows code reusability when a class includes property of another class.

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What is and what is the benefit of encapsulation?

Encapsulation is defined as the wrapping up of data under a single unit. It is the mechanism that binds together code and the data it manipulates. Another way to think about encapsulation is, it is a protective shield that prevents the data from being accessed by the code outside this shield.

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What is and what is the benefit of polymorphism?

Polymorphism refers to the ability of OOPs programming languages to differentiate between entities with the same name efficiently.

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What is a Getter and Setter.....what are their purpose as it relates to encapsulation?

Getter and setter are class methods that gives or sets the value of a class member. It is useful in data hiding. It shows encapsulation.

venereology answered 1 year ago

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