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Ex41 Phrase Drills
word drills and phrase drills from pg 152-153 of Learn Python 3 The Hard Way
| Term | Definition |
|---|---|
| class | Tell Python to make a new type of thing. |
| object | (1) The most basic type of thing and (2) 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. |
| composition | The concept that a class can be composed of other classes as parts. |
| attribute | A property that a class has that's from composition and is usually a variable. |
| is-a | .............."inherits from" ............... A phase to say that something inherits from another, as in a "salmon" is-a "fish". |
| 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". |
| class X(Y) | "Make a class named X that is-a Y." |
| class X(object): def __init__(self, J) | "class X has-a __init__ 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, and J." |
| foo.K = Q | "From foo, get the K attribute, and set it to Q." |
| class Dogs(Y) | "Make a class named Dogs that is-a Y." |
| class Dogs(object): def __init__(self, parts) | "class Dogs has-a __init__ that takes self and parts parameters." |
| class Dogs(object): def greet(self, words) | "class Dogs has-a function named greet that takes self and words parameters." |
| beagle = Dogs() | "set beagle to an instance of class Dogs." |
| beagle.greet(words) | "From beagle, get the greet function, and call it with parameters self and words." |
| beagle.name = "Becky" | "From beagle, get the name attribute, and set it to "Becky". |
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Marquel_S
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