CSE 2050 - Mod 2

If you use the "yield function within what would otherwise be a function, what does it create?

A generator

What is a public method?

Something that anyone can change

Attributes are

variables created and defined in a method

T/F Inheritance has a “has a” relationship

False, it has a “is a” relationship because EVERYTHING is inherited.

ex/ A cat IS A animal, so cat would inherit everything from the animal class

What are the goals of object-oriented programming?

Code reusability, simplicity, and easier visuals

What is a class variable?

A general variable that stays the same for all methods within a class (global)

What is an instance variable?

A variable that changes from method to method (local)

What are objects?

Objects are placeholders of other data types

What is inheritance?

The exchanging of information from a parent class to a/multiple child classes

T/F Inheritance gives all attributes, methods, and behaviors of a child class to a parent class

False, the parent gives to the child

What is method resolution order?

Which class the code checks for the desired method (child FIRST, parent SECOND)

Abstract classes are considered to be ___ for other classes

blueprints

Can abstract classes make objects?

No, they cannot

What is composition?

A way to exchange select information between classes

Polymorphism definition?

Using the same function with the same name but yielding different results

What is operator overloading?

Manually coding something that would otherwise be automatic

ex/ object.__add__(a,b) instead of using +

What is encapsulation?

The packing of data and methods into a class so you can privatize things

How do you make a attribute private?

Two underscores before the name

ex/ self.__baddies = baddie

Can you access a private attributes inside the class? Outside?

Inside: yes but you shouldn’t

Outside: NO, creates attribute error

Purpose of the init method?

To initialize the state of an abject when it is created

Are methods that begin AND end in double underscores private or public?

Public, they’re built into the system and always accessible

If a question says code will “work on any object with an attribute named “___”, what is this an example of?

Polymorphism

What are dunder/magic methods?

Methods that begin and end with __ (double underscore)

What is abstraction?

Knowing the result but not how it works/ innerworkings

What are the four pillars of objects?

Abstraction, Polymorphism, Encapsulation, and Composition