Python Class Quiz

What is the correct syntax to create an instance of a class named `Vehicle`?

• `Vehicle newCar = new Vehicle();`

• `newCar = Vehicle()`

• `newCar = Vehicle`

• `newCar = Vehicle()`

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DOK Level 2: Skill/Concept

Which of the following statements is true about attributes in Python classes?

• Attributes are always public and can be accessed using any instance.

• Attributes can be defined within methods and accessed outside the class.

• Attributes are variables that belong to the class.

• Attributes cannot be initialized in the constructor.

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DOK Level 2: Skill/Concept

What does the `__init__` method do in a Python class?

• It is called to initialize the class's state.

• It declares the class to other modules.

• It is called automatically whenever a new object is created.

• Both A and C are correct.

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DOK Level 2: Skill/Concept

In Python, how do you define a constructor for initializing the attributes of a class?

• `def __init__(self):`

• `def __constructor__(self):`

• `def Vehicle(self):`

• `def __init__():`

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DOK Level 2: Skill/Concept

What is the purpose of inheritance in Python classes?

• To allow classes to inherit methods and attributes from other modules.

• To permit the creation of new classes that reuse, extend, and modify the behavior defined in other classes.

• To prevent duplication of code across similar classes.

• All of the above are correct.

How do you call a method from a parent class in a child class method in Python?

• `super().methodName()`

• `parent.methodName()`

• `self.methodName()`

• `methodName()`

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DOK Level 2: Skill/Concept

What is the correct way to add an attribute `color` to a class `Car` and initialize it?

• ```python class Car: def __init__(self, color): self.color = color ```

• ```python class Car: color = '' def __init__(self, color): color = self.color ```

• ```python class Car: def __init__(self, color): color = color ```

• ```python class Car: def __init__(self): self.color = 'color' ```

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DOK Level 2: Skill/Concept

Which statement is true about child classes in Python?

• Child classes inherit all methods and properties from the parent class.

• Child classes cannot have methods with the same name as those in the parent class.

• Child classes do not inherit constructors from the parent class.

• Child classes must redefine all attributes of the parent class.

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DOK Level 2: Skill/Concept

How can you access the attribute `age` of an instance `person` of a class `Person`?

• `Person.age`

• `person.getAge()`

• `person.age`

• `age.person`

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DOK Level 2: Skill/Concept

What is the result of using inheritance in Python classes?

• Increased memory usage due to duplication.

• Reduced code reusability.

• Enhanced code maintenance and reusability.

• Slower execution of programs.

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DOK Level 2: Skill/Concept