Python Programming Quiz

What is the purpose of the __init__ method in Python?

• To initialize a class object

• To terminate a program

• To define a static method

• To create a generator

What is the output of the following code? print(type(3 + 5.0))

• int

• float

• str

• boolean

Which of the following is true about Python's None?

• It is the same as False.

• It is a placeholder for missing or undefined values.

• It is equivalent to an empty string.

• It is a data type used for integers.

What is the output of the following code? my_list = [1, 2, 3, 4] my_list[1:3] = [10, 20] print(my_list)

• [1, 10, 20, 4]

• [1, 2, 3, 4]

• [10, 20, 3, 4]

• [1, 10, 20, 3, 4]

Study the following expression: str = [(1, 1), (2, 2), (3, 3)] What type of data is in this expression?

• Array lists

• str lists

• List of tuples

• String type

What will be the output of the following Python code? >>> str1 = 'hello' >>> str1[-1:]

• hello

• h

• o

• olleh

Which of the following is true about Python sets?

• Sets are ordered and mutable.

• Sets can contain duplicate elements.

• Sets are unordered and mutable.

• Sets are indexed and immutable.

What is the output of the following code? my_dict = {'a': 1, 'b': 2} print(my_dict.get('c', 3))

• None

• 3

• KeyError

• 2

Which of the following is true about Python tuples?

• Tuples are mutable.

• Tuples can be used as dictionary keys.

• Tuples are faster than lists for appending elements.

• Tuples are indexed but unordered.

What is the output of the following code? my_set = {1, 2, 3} my_set.update([4, 5], {6, 7}) print(my_set)

• {1, 2, 3, 4, 5, 6, 7}

• {1, 2, 3, [4, 5], {6, 7}}

• TypeError

• {1, 2, 3}