CS1101 Unit 7 Quiz PDF

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Self-quiz 7 review Question 1 What is the output of the following Python program? print(dict().get("no", "help!")) Select one: a. b. c. d. e.

True No No help! Help! False

The correct answer is: help!

Question 2 If you use a Python dictionary in a for   statement, it traverses the _____ of the dictionary. Select one: a. b. c. d. e.

values and keys indices keys and values values keys

Select one: The correct answer is: keys

Question 3 Given a Python dictionary d and a value v, it is efficient to find the corresponding key: d[k] = v. Select one: True False The correct answer is: ‘False’

Question 4 What will the contents of mylist be after the following Python code has been executed? >>> mylist = [1, 4, 2, 3] >>> mylist.append(5) Select one: a. [1, 4, 2, 3, 5]

b. [5, 1, 4, 2, 3] c. [null] d. [1, 4, 2, 3] The correct answer is: [1, 4, 2, 3, 5]

Question 5 What is the output of the Python code below? my_list = [3, 2, 1] print(my_list.sort()) Select one: a. b. c. d. e.

0 {1, 2, 3} None Syntax error [1, 2, 3]

The correct answer is: None

Question 6 Python functions can take a variable number of arguments. Select one: True False The correct answer is: ‘True’

Question 7 Python dictionaries are mutable. Select one: True False The correct answer is: ‘True’

Question 8 What is the value of the following Python expression? (0, 1, 5, 2) > (0, 1.0, 4, 3.1) Select one: a. b. c. d.

0 1 False True

e. Syntax error The correct answer is: True

Question 9 Assume that d is a Python dictionary. What does the following Python code produce? or k in d: if d[k] == v: return k Select one: a. b. c. d. e.

a histogram an inverted dictionary a list of tuples a lookup a reverse lookup

The correct answer is: a reverse lookup

Question 10 In the following segment of Python code, what do we call the portion of the statement that follows the dot('.capitalize')? str.capitalize('maryland')  Select one: a. b. c. d.

Module Method Attribute Function name

The correct answer is: Method

Question 11 Which of the following types are allowed for Python dictionary keys? Select one: dictionary list list of dictionaries tuple All of the above The correct answer is: tuple

Question 12 Which of the following types are allowed for Python dictionary values? Select one: a. b. c. d. e.

dictionary list list of dictionaries tuple All of the above

The correct answer is: All of the above

Question 13 What is the output of the Python code below? my_tup = (3, 2, 1, 2) print(tuple(sorted(my_tup))) Select one: a. b. c. d. e.

(1, 2, 3) {1, 2, 2, 3} (1, 2, 2, 3) syntax error [1, 2, 2, 3]

The correct answer is: (1, 2, 2, 3)

Question 14 Assume that d is a Python dictionary. What does the following Python code produce? d.items() Select one: a. b. c. d. e.

a histogram an inverted dictionary a list of tuples a lookup a reverse lookup

The correct answer is: a list of tuples

Question 15 Assume that d is a Python dictionary. What does the following Python code produce? d.items() Select one: a. a histogram

b. c. d. e.

an inverted dictionary a list of tuples a lookup a reverse lookup

The correct answer is: an inverted dictionary

Question 16 Python tuples are immutable. Select one: True False The correct answer is: ‘True’...