Computer Science 1301 Final Questions

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What is an instance attribute in Python?

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An instance attribute is a variable that is bound to the instance of a class. Each object has its own copy of the instance attribute.

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What will be the output of the following code? numbers = {} letters = {} comb = {} numbers['Josh'] = 89 numbers['Alex'] = 95 letters[1] = 'B' letters[2] = 'A' comb['Numbers'] = numbers comb['Letters'] = letters print(comb)

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{'Numbers': {'Josh': 89, 'Alex': 95}, 'Letters': {1: 'B', 2: 'A'}}

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What does the 'items()' method do in a dictionary?

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The 'items()' method returns a view object that displays a list of a dictionary's key-value tuple pairs.

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What is an instance in object-oriented programming?

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An instance is a specific realization of a class. It is created when a class is instantiated.

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What is the purpose of the __init__ method in a class?

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The __init__ method is a special method in Python classes that initializes the instance attributes when an object is created.

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What is the output of the following code? my_dict={1:"A", 2:"B", 3:"C"} for i in my_dict.items(): print(i, end=" ")

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1: 'A' 2: 'B' 3: 'C'

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How do you define a class in Python?

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A class in Python is defined using the 'class' keyword followed by the class name and a colon. For example: class MyClass:.

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What is the difference between instance attributes and class attributes?

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Instance attributes are specific to an instance of a class, while class attributes are shared across all instances of the class.

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What is the purpose of the self parameter in class methods?

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The self parameter refers to the instance of the class and is used to access instance attributes and methods.

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What will happen if you try to access an undefined variable in a class method?

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An error will occur, specifically a NameError, indicating that the variable is not defined.