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