Learning to Speak Object-Oriented Flashcards
class
Tell Python to make a new type of thing
object
Two meanings: The most basic type of thing, and any instance of some thing.
instance
What you get when you tell Python to create a class
def
How you define a function inside a class
self
Inside the functions in a class, self is a variable for the instance/object being accessed
inheritance
The concept that one class can inherit traits from another class, much like you ad your parents
composition
the concept that a class can be composed of other classes as parts, much like how a car has wheels
attribuite
A property classes have that are from composition and are usually variables.
is-a
A phrase to say that something inherits from another, as in a “salmon” is-a ”fish.
Class X(Y)
Make a class named X that is-a Y
Class X(object): def M(self, J)
Class X has-a function named M that takes self and J parameters
Class X(object): def M(self, J)
Class X has-a function named M that takes self and J parameters
foo = X()
Set foo to an instance of class X
foo.M(J)
From foo, get the M function, and call it with parameters self, J
foo.K = Q
from foo, get the J attribute, ad set it to Q
