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