Classes
Classes 2
Understanding Code
Vocabulary
Free Form
100
This is a specific “instance” created from a class, like dog = Dog().
What is an object?
100
In the analogy of blueprints and houses, the blueprint represents what?
What is the class?
100
What is the output of this code?
What is pong?
100
The term for assigning an initial value to a variable.
What is initialization?
100
Explain the reasons that classes are helpful.
What is classes let you package data + behavior into a single, reusable unit, which scales much better than separate variables and functions
200
In a class, this first parameter refers to the current object (instance).
What is self?
200
In the analogy of blueprints and houses, the house represents what?
What is an object/instance?
200
What is wrong with this code?
It is missing an argument for b.f(#)
200
Inputs to a function are called this.
What are arguments?
200
Why might it be useful to track the instances of a class?
What is it allows tasks to be performed on each instance (e.g., searching, updating values, etc.)
300
This operator/notation/punctuation is used to access an object’s attributes and methods (example: dog2.talk()).
What is the dot operator (.)
300
A programmed procedure defined as part of a class and included in any object of that class.
What is a method?
300
What is the value of c1.v after this code is run?
What is 10?
300
This is the process of “make me a new object” from a class.
What is instantiation?
300
Explain the difference between testing and debugging.
Debugging: correcting errors
Testing: Validating outputs and checking robustness (e.g., invalid inputs, missing files, etc).
400
This method sets an object’s initial attributes / instance variables (initial state)?
What is the __init__ method?
400
You want all instances to share a single counter like total_players. This should be stored as a __________ variable (defined at the class level).
What is a class variable (class attribute)?
400
What prints?
What is 8?
400
The names listed in a function definition that receive the incoming values.
What are parameters?
400
These are the types of data (strings, integers, lists, etc.) can be included as class attributes.
What is all types of data?
500
This is the name of a special method that is automatically called when you create a new object.
What is __init__ or constructor?
500
What is the key difference between self.x and x inside a method, assuming x wasn’t passed in as a parameter?
Self.x is an attribute of an object; x would be a local variable (and may be undefined).
500
What prints?
What is ['x']
500
Functional decomposition is ____?
What is breaking a program into functions to reduce repetition and improve readability.
500
Describe abstraction
What is the process of managing complexity by hiding unnecessary details and exposing only essential features through simplified interfaces