App Dev Proj Week 1 Lesson 2

Welcome to Lesson 2!

Classes, Objects & Methods

​What are we going through today?

• ​Attendance

• ​Admin matters

• ​Object-oriented concepts in Python

• ​Q&A

​Admin Matters

• ​Submit project groupings by lesson 3

​Forgot to mention...

​There will be quiz!

​Unprecedented rules

​The inevitable...

​If you need to be excused, raise your hands and wait for my signal...

Or if you can disappear without me knowing, please go ahead :)​

​Let's gauge our knowledge on object-oriented concepts

Multiple Choice

What is the 1st fundamental of object-oriented concept?

• Decapsulation

• Enchanted

• Encapsulation

• Disenchant

​Encapsulation

• Data hiding​

• Attributes are hidden or kept as private in a class

• ​Attributes cannot be accessed directly

• Allows manipulation of attributes through the accessor and mutator methods

Multiple Choice

How about the 2nd fundamental of OO?

• Intuitive

• Inheritance

• Instagram

• Extension

​Inheritance

• ​One class inheriting the attributes and methods of another class

Multiple Choice

Let's see if you know the 3rd one

• Abominable

• Ability

• Abstraction

• Apple

​Abstraction

• Hides functionalities of a function from the public

• ​Enhances development of main functions without the need to know the details of the other functions

• ​Sometimes works together with Encapsulation concepts in place

Multiple Choice

The last one!

• Polygon

• Persistence

• Polymorphism

​Polymorphism

• ​The child class can be any form of the parent class

​Classes, Objects & Methods

Back to the slides​

Let's shake our brains!

Multiple Choice

What is a blueprint from which objects are created?

• Instance

• Class

• Method

• Attribute

Multiple Choice

What is an instance of a class?

• Method

• Attribute

• Instance

• Object

Multiple Choice

What can be created many times as needed?

• Class

• Object

• Attribute

• Method

Multiple Choice

What doesn't allocate memory when created?

• Object

• Class

Multiple Choice

Which type of attribute can be accessed by qualifying with an instance name?

• Data attribute

• Class attribute

Multiple Choice

What is the method that sets the value of the attribute?

• Mutator method

• Accessor method

Multiple Select

What are the 2 advantages of encapsulation?

• Hides attributes from others

• None of the above

• Makes the class look more sophisticated

• Allow validation before storing values

Multiple Choice

How many ways can you define a class in Python?

• I can't

• One way

• More than once

​Next week's lesson

• ​Week 2 Lesson 1

  • ​Project Scenario

  • Using Bootstrap​ framework to create navigation bar

• ​Week 2 Lesson 2

  • ​More object-oriented concepts for Python

  • ​Exception Handling in Python

Q&A​

​Thank you class!

​See you all next week!