Quiz Computer Science

Question 1 Not answered Assume the following Python code has already executed. import os cwd = os.getcwd() Which answer is most likely output from the following Python statement? os.path.isdir(cwd) Select one: a. ['Music', 'Pictures', 'Desktop', 'Library', 'Documents', 'Downloads'] b. False c. True d. /Users/me e. /Users/me/Documents/file.txt Your answer is incorrect. The correct answer is: True Question 2 Not answered Assume the following Python code has already executed. import os cwd = os.getcwd() Which answer is most likely output from the following Python statement? os.path.isfile(cwd) Select one: a. ['Music', 'Pictures', 'Desktop', 'Library', 'Documents', 'Downloads'] b. False c. True d. /Users/me e. /Users/me/Documents/file.txt Your answer is incorrect. The correct answer is: False Question 3 Not answered What is the output from the following interactive Python statement? >>> '%d' % (0.1) Select one: a. '0' b. '0.1' c. TypeError: float argument required, not str d. TypeError: not all arguments converted during string formatting e. TypeError: not enough arguments for format string Your answer is incorrect. The correct answer is: '0' Question 4 Not answered Consider the following Python program. fin = open('words.txt') for line in fin: word = line.strip() print(word) What is fin? Select one: a. A file object b. A list of characters c. A list of words d. A string that may have a newline e. A string with no newline Your answer is incorrect. The correct answer is: A file object Question 5 Not answered Which of the following Python statements runs without error? Select one: a. open('three.txt').write(3) b. open('three.txt','w').write(3) c. open('three.txt','w').write(str(3)) d. All of the above e. None of the above Your answer is incorrect. The correct answer is: open('three.txt','w').write(str(3)) Question 6 Not answered Consider the following Python program. fin = open('words.txt') for line in fin: word = line.strip() print(word) What is line? Select one: a. A file object b. A list of characters c. A list of words d. A string that may have a newline e. A string with no newline Your answer is incorrect. The correct answer is: A string that may have a newline Question 7 Not answered Consider the following Python program. fin = open('words.txt') for line in fin: word = line.strip() print(word) What does the program loop over? Select one: a. Lines in a file b. Lines in a list c. Words in a dictionary d. Words in a list e. Words in a string Your answer is incorrect. The correct answer is: Lines in a file Question 8 Not answered What is the output from the following interactive Python statement? >>> '%g %d' % (0.1) Select one: a. '0' b. '0.1' c. TypeError: float argument required, not str d. TypeError: not all arguments converted during string formatting e. TypeError: not enough arguments for format string Your answer is incorrect. The correct answer is: TypeError: not enough arguments for format string Question 9 Not answered What is the output from the following interactive Python statement? >>> '%g' % (0,1) Select one: a. '0' b. '0.1' c. TypeError: float argument required, not str d. TypeError: not all arguments converted during string formatting e. TypeError: not enough arguments for format string Your answer is incorrect. The correct answer is: TypeError: not all arguments converted during string formatting Question 10 Not answered Assume the following Python code has already executed. import os cwd = os.getcwd() Which answer is most likely output from the following Python statement? os.listdir(cwd) Select one: a. ['Music', 'Pictures', 'Desktop', 'Library', 'Documents', 'Downloads'] b. False c. True d. /Users/me e. /Users/me/Documents/file.txt Your answer is incorrect. The correct answer is: ['Music', 'Pictures', 'Desktop', 'Library', 'Documents', 'Downloads']