题目

MCD4710 Introduction to Programming - Trimester 2 - 2025

多重下拉选择题

Blank 1 Question 7[select: , using, from abc import, from abstract import] ABC , abstractmethodclass Animal(Blank 2 Question 7[select: , Base, ABC, Object] ): @abstractmethod def make_sound(self): Blank 3 Question 7[select: , super().make_sound(), return "sound", pass] class Dog(Animal): def make_sound(self): return "Bark"

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思路分析

This question asks you to fill three blanks in a short Python code snippet involving abstract base classes. First, consider Blank 1, which should supply the import needed for defining an abstract base class and its decorator. The correct fragment is 'from abc import', because th......Login to view full explanation

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What happens if you try to instantiate an abstract class?

Does Java allow an abstract class to be a child of a parent class that is also abstract?

from abc import ABC, abstractmethod class DataProcessor(ABC): def init(self, data): self.data = data @abstractmethod def clean(self): pass def process(self): cleaned_data = self.clean() return sum(cleaned_data) class ListProcessor(DataProcessor): def clean(self): cleaned = [] for x in self.data: if isinstance(x, (int, float)): cleaned.append(x) return cleaned class AveragingProcessor(ListProcessor): def process(self): cleaned = self.clean() return sum(cleaned) / len(cleaned) dp = ListProcessor([1, 2, "a", 3]) ap = AveragingProcessor([10, None, 20, 30, "skip"]) print(dp.process()) print(ap.process()) What will happen when the above code is executed? Select all correct statements. Incorrect selections will deduct points from your score.

Can an abstract class be a child class of another abstract class?

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