VCE Software Development U4O1 Word Scramble: Efficient and effective solutions and user-centred design to Classes, objects and access modifiers (Modules 3–79)
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Word scramble
Unscramble the letters and write each key term on the line.
1
REEU-TCENDSR SEIGND
Designing a solution around the needs of its real users, by finding out what they need and involving them throughout development, using their feedback to revise the design.
2
NPN(IIUTT())
input() always returns a str, so convert it (e.g. with int) to store it as a number. Turn it back into text with str() or an f-string when you output it.
3
ERODUECPR SV OUCTNINF
A procedure carries out a task without returning a value, while a function returns a value to the code that called it, so the result can be stored or used.
4
FED AINM():
A function that calls other small functions, each doing one job, so the program is built in parts. Each box in a hierarchy chart can become one function.
5
PBCJEES.TODJAP(BON)
Adds an object to the end of a list so many objects are stored together. You can then loop over the list with a for loop to call each object's methods or find one by its attribute.
6
MLES.EAFN
A public member has no leading underscore, so code inside or outside the class can access it, e.g. ______ in the class or pet.name outside it.
7
_ENMA
A single underscore prefix marks a protected member: by convention it is for use inside the class and its subclasses only. Python does not enforce it, so outside code can still access it.
8
NAEL.__FMSE
A private attribute: the double underscore makes Python name-mangle it, so code outside the class cannot reach it directly and gets an AttributeError.
9
@YRPRPOET
A decorator above a getter method. It lets outside code read a private attribute like a normal attribute, such as obj.name, with no brackets. With no setter, the attribute is read-only.
Answer Key
VCE Software Development U4O1 · Modules 3–79
1REEU-TCENDSR SEIGND → user-centred design — Designing a solution around the needs of its real users, by finding out what they need and involving them throughout development, using their feedback to revise the design.
2NPN(IIUTT()) → int(input()) — input() always returns a str, so convert it (e.g. with int) to store it as a number. Turn it back into text with str() or an f-string when you output it.
3ERODUECPR SV OUCTNINF → procedure vs function — A procedure carries out a task without returning a value, while a function returns a value to the code that called it, so the result can be stored or used.
4FED AINM(): → def main(): — A function that calls other small functions, each doing one job, so the program is built in parts. Each box in a hierarchy chart can become one function.
5PBCJEES.TODJAP(BON) → objects.append(obj) — Adds an object to the end of a list so many objects are stored together. You can then loop over the list with a for loop to call each object's methods or find one by its attribute.
6MLES.EAFN → self.name — A public member has no leading underscore, so code inside or outside the class can access it, e.g. self.name in the class or pet.name outside it.
7_ENMA → _name — A single underscore prefix marks a protected member: by convention it is for use inside the class and its subclasses only. Python does not enforce it, so outside code can still access it.
8NAEL.__FMSE → self.__name — A private attribute: the double underscore makes Python name-mangle it, so code outside the class cannot reach it directly and gets an AttributeError.
9@YRPRPOET → @property — A decorator above a getter method. It lets outside code read a private attribute like a normal attribute, such as obj.name, with no brackets. With no setter, the attribute is read-only.