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