word drills and phrase drills from pg 152-153 of Learn Python 3 The Hard Way
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| class | Tell Python to make a new type of thing.
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| object | (1) The most basic type of thing and (2) 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.
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| composition | The concept that a class can be composed of other classes as parts.
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| attribute | A property that a class has that's from composition and is usually a variable.
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| is-a | .............."inherits from" ...............
A phase to say that something inherits from another, as in a "salmon" is-a "fish".
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| has-a | ................"composed of"................
A phase 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."
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| class X(object): def __init__(self, J) | "class X has-a __init__ that takes self and J 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."
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| foo = X() | "Set foo to an instance of class X."
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| foo.M(J) | "From foo, get the M function, and call it with parameters self, and J."
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| foo.K = Q | "From foo, get the K attribute, and set it to Q."
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| class Dogs(Y) | "Make a class named Dogs that is-a Y."
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| class Dogs(object): def __init__(self, parts) | "class Dogs has-a __init__ that takes self and parts parameters."
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| class Dogs(object): def greet(self, words) | "class Dogs has-a function named greet that takes self and words parameters."
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| beagle = Dogs() | "set beagle to an instance of class Dogs."
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| beagle.greet(words) | "From beagle, get the greet function, and call it with parameters self and words."
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| beagle.name = "Becky" | "From beagle, get the name attribute, and set it to "Becky".
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