App Dev Proj Week 2 Lesson 2

​Welcome to Lesson 4!

​Classes, Objects & Methods

​Exceptions

​What are we going through today?

• Attendance

• Recap on Last Week Lesson

• More Object-Oriented Concepts

• ​Introduction to Exception Handling

Recap Time!​

Multiple Select

What is a class?

• A class is contained within an attribute

• Class is a blueprint in which objects are created

• Class has class and data attributes

• There are many ways to define a class

​What is a class?

• ​A class is a blueprint in which objects are created

• ​A class can have data attributes and methods

• ​A class can only be defined in one way

• ​A class doesn't allocate memory when created

Multiple Select

What is an object?

• Object can be created as many times as per requirement

• Object doesn't allocate memory when created

• There are many ways to create objects in python

• Object is an instance of a class

​What is an object?

• ​An object is an instance of a class

• ​Object can be created as many times as per requirement

• ​Object allocates memory when created

• ​There are many ways to create objects in python

Multiple Choice

What type of parameter can be passed into a method?

• Objects

• Variables

• Methods

• All of the above

Multiple Choice

What is the method that changes the value in a hidden attribute?

• Accessor Method

• Mutator Method

• Protector Method

​Mutator Method

• ​Also known as setter method

• ​Allows external class to access and change the values in a hidden attribute

Multiple Choice

What is the method that allows a hidden attribute to be accessed?

• Accessor Method

• Mutator Method

• Protector Method

​Accessor Method

• ​Also known as getter method

• ​Allows external class to access the hidden attribute within another class

​A little bit more on...

​classes, attributes, objects and methods

​Abstraction

​Exceptions

​Next Week

• Working on Identifying objects for your project

• Introduction to persistence​

Thank you class!​

​See ya next week!