Download Python Lists: Fundamentals and Operations and more Exams Nursing in PDF only on Docsity!
What is a list in Python? - correct answers ✅a container that stores a collection of elements that are arranged in a linear or sequential order Given the following list, what value is at index 5? values = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] - correct answers ✅ 6 Consider the following line of code: somelist = ["a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"] Which one of the following options is a valid line of code for displaying the element at the twenty-second position in the list? - correct answers ✅print(somelist[21]) Given the list below, what are the upper and lower bounds? somelist = ["a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"] - correct answers ✅0, 25 What is the valid range of index values for a list? - correct answers ✅at least zero and less than the number of elements in the list What is printed after executing the following code snippet? somelist = ["a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v",
"w", "x", "y", "z"] for i in range(len(somelist)) : print(somelist[i], end = "") - correct answers ✅abcdefghijklmnopqrstuvwxyz What is printed after executing the following code snippet? somelist = ["a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"] for i in range(0, len(somelist), 2) : print(somelist[i], end = "") - correct answers ✅acegikmoqsuwy Which statement correctly creates a list that contains four elements? - correct answers ✅values = [1, 2, 3, 4] What is the difference between a list and a string? - correct answers ✅lists can hold values of any type, whereas strings are only sequences of characters Which statement gets the length of the list values? - correct answers ✅numValues = len(values) Given a list values that contains the first ten prime numbers, which statement prints the index and value of each element in the list? - correct answers ✅for i in range(10): print(i, values[i])
What is displayed when it runs? - correct answers ✅[1, 2, 3, 6, 5] What will happen when the following code segment is executed? values = [1.618, 2.71, 3.14] print(values[3]) - correct answers ✅Python will display an out-of-range error Consider the following code snippet. What will be stored in the list prices after this code executes? prices = [10.00, 15.50, 13.50, 20.15] for i in range(len(prices)) : prices[i] = prices[i] * 1.06 - correct answers ✅[10.60, 16.43, 14.31, 21.36] Given the list values = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], which statement fills the list with these numbers: 1 2 3 4 5 6 7 8 9 10 - correct answers ✅for i in range(10) : values[i] = i
- 1 Which statement creates a new, empty list? - correct answers ✅data = [] Which statement correctly identifies the error in this code snippet? scores = [80, 85, 60.5, 95, 70] print(scores[5]) - correct answers ✅IndexError: list index out of range
Given the following code snippet, which statement correctly copies the contents of the list prices? prices = [10.00, 15.50, 13.25, 20.15] - correct answers ✅values = list(prices) Given the definition of a list: names = [] which statement correctly adds "Harry"to the list? - correct answers ✅names.append("Harry") Which of the following statements looks for the name 'Bob' in the list names? - correct answers ✅if "Bob" in names: print("found Bob") Given the following code snippet, what is the value of the variable indexValue? states = ["Alaska", "Hawaii", "Florida", "Maine", "Ohio", "Florida"] indexValue = states.index("Hawaii") - correct answers ✅ 1 Given the following code snippet, what is the value of the variable removedValue? states = ["Alaska", "Hawaii", "Florida", "Maine", "Ohio", "Florida"] removedValue = states.pop(3) - correct answers ✅Maine Given the following code snippet, what is the content of the list states? states = ["Alaska", "Hawaii", "Florida", "Maine", "Ohio", "Florida"] states.pop() - correct answers ✅["Alaska", "Hawaii", "Florida", "Maine", "Ohio"]
What is the resulting value of this code snippet? sum([1, 2, 3, 4, 5]) - correct answers ✅ 15 What is the resulting value of this code snippet? max(["Roland", "Kent", "Ravi", "Amy"]) - correct answers ✅"Roland" What is the resulting content of the list after this code snippet? min(["Roland", "Kent", "Ravi", "Amy"]) - correct answers ✅Amy What is the resulting content of the list values after this code snippet? values = [1991, 1875, 1980, 1965, 2000] values.sort() - correct answers ✅[1875, 1965, 1980, 1991, 2000] What is the resulting content of the list letters after this code snippet? letters = list("abcdefg") - correct answers ✅letters contains a list with the contents: ["a", "b", "c", "d", "e", "f", "g"] Which of the following code segments will result in values containing the list["Hydrogen", "Helium", "Lithium"]? - correct answers ✅values = [] values.append("Hydrogen") values.append("Helium") values.append("Lithium")
Which of the following code segments will result in values containing the list["X", "Y", "Z"]? - correct answers ✅values = ["X"] values.insert(1, "Y") values.insert(2, "Z") What is stored in pos when the following code segment executes? values = ["J", "Q", "X", "Z"] pos = values.find("Y") - correct answers ✅No value is stored because a runtime exception occurs What is in grades after the follow code segment executes? grades = ["A", "B+", "C", "C+", "C", "B-"] grades.remove("C") - correct answers ✅["A", "B+", "C+", "C", "B-"] What is displayed by the following code segment? values = ["Q", "W", "E", "R", "T", "Y"] print(min(values)) - correct answers ✅E What is output by the following code segment? x = list("QWERTY") print(x) - correct answers ✅["Q", "W", "E", "R", "T", "Y"]
Which statement correctly compares these two lists for equality? nums = [1, 2, 3, 4, 5] nums2 = [5, 4, 3, 2, 1] - correct answers ✅if nums == nums What is in values after the following code segment executes? values = [1, 2, 3] values = values * 4 - correct answers ✅Nothing because a runtime error occurs Consider the following code segment: x = [5, 3, 7] y = sorted(x) print(x) What is displayed when it executes? - correct answers ✅[5, 3, 7] Consider the following code segment: x = [5, 3, 7] y = x.pop() print(y) What is displayed when it executes? - correct answers ✅ 7 Consider the following code segment: x = [5, 3, 7, 9, 1] y = x[2 : 4] print(y) What is displayed when it executes? - correct answers ✅[7, 9] Consider the following code segment: x = [5, 3, 7, 9, 1] y = x[3 : ] print(y) What is displayed when it executes? - correct answers ✅[9, 1] Consider the following code segment: x = [5, 3, 7, 9, 1] y = x[ : 2] print(y) What is displayed when it executes? - correct answers ✅[5, 3]
What is the resulting contents of the list values in this code snippet? values = [] for i in range(10) : values.append(i) - correct answers ✅[0, 1, 2, 3, 4, 5, 6, 7, 8, 9] What is the resulting value of the variable sentence in this code snippet? words = ["Mary", "had", "a", "little", "lamb"] sentence = "" for word in words : sentence = sentence + word - correct answers ✅Maryhadalittlelamb What is the resulting value of the variable sentence in this code snippet? words = ["Mary", "had", "a", "little", "lamb"] sentence = str(words) - correct answers ✅['Mary', 'had', 'a', 'little', 'lamb'] What is missing from this code snippet to find the largest value in the list? largest = values[0] for i in range(1, len(values)) : if values[i] > largest : - correct answers ✅largest = values[i] What code completes this code snippet to swap the first and last element in the list? states = ["Alaska", "Hawaii", "Florida", "Maine"] i = 0 ________________________ temp = states[j] states[j] = states[0] states[i] = temp - correct answers ✅j = len(states) - 1
Which code segment swaps the elements at position 0 and position 2 within thevalues list? - correct answers ✅temp = values[2] values[2] = values[0] values[0] = temp The following code segment is supposed to read all of the integers entered by the user until a blank line is entered and store them in values. values = [] inputStr = input("Enter a value (blank line to quit): ") ____________________ values.append(int(inputStr)) inputStr = input("Enter a value (blank line to quit): ") What line of code should be placed in the blank to achieve this goal? - correct answers ✅while inputStr != "" : What is missing from this code snippet to find the longest value in the list? colors = ["red", "purple", "blue", "green", "yellow", "light green"] longest = colors[0] for i in range(1, len(colors)) : _____________________ longest = colors[i] - correct answers ✅if colors[i] > longest : What type of search inspects every element sequentially?
- correct answers ✅linear search What is printed by the following code snippet? words = ["Today", "is", "Wednesday", "tomorrow", "is", "Thursday"] for i in range(len(words)) : word = words[i] if len(word) < 8 : words.pop(i) print(words) - correct answers ✅Nothing,
this code snippet causes an IndexError: list index out of range error. What is printed by the following code snippet? words = ["Today", "is", "Wednesday", "tomorrow", "is", "Thursday"] i = 0 while i < (len(words)) : word = words[i] if len(word) < 8 : words.pop(i) else : i = i + 1 print(words) - correct answers ✅["Wednesday", "tomorrow", "Thursday"] Which of the following statements is NOT true about functions and lists: - correct answers ✅when calling a function with a list argument, the function receives a copy of the list The following function is supposed to add 1 to every element in a list of integers. def addOne(values) : for i in range(len(values)) : values[i] = values[i] + 1 What is wrong with the following function? - correct answers ✅The statement return values must be added to the end of the function. Given a list containing prices, how do you find the highest priced item and remove it from the list: - correct answers ✅find the maximum, remove it from the list What does the following code segment do? x = 0 for i in range(1, len(values)) : if values[i] > values[x] : x = i -
What does the following code segment do? x = [] for i in range(5) : x.append([]) for j in range(3) : x[i].append(0) - correct answers ✅It creates a table with 3 columns and 5 rows and stores it in x. What output is generated by the following code segment? table = [["T", "U", "V"], ["W", "X", "Y"]] print(table[0]) - correct answers ✅["T", "U", "V"] What output is generated by the following code segment? table = [["T", "U", "V"], ["W", "X", "Y"]] print(table[1][1]) - correct answers ✅X Consider the following table: table = [["T", "U", "V"], ["W", "X", "Y"]] Which statement will display Y? - correct answers ✅print(table[len(table) - 1][len(table[1]) - 1]) Which of the following statements best represents a deck of cards? - correct answers ✅suits = ["Hearts", "Spades", "Diamonds", "Clubs"] faceValues = ["Ace", 2, 3, 4, 5, 6, 7, 8, 9, 10, "Jack", "Queen", "King"] What is printed from the following code snippet? prices = [[ 1.0, 3.50, 7.50 ], [ 10.0, 30.50, 70.50 ], [ 100.0, 300.50, 700.50 ], [ 1000.0, 3000.50, 7000.50 ]] print(prices[1][2])
Given the list values = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], which statement fills the list with these numbers: 1 4 9 16 25 36 49 64 81 100 - correct answers ✅for i in range(10): values[i] = (i + 1) * (i + 1) What list is stored in x after this code segment has run? x = [] for i in range(3) : x.append([]) for j in range(i) : x[j].append(0) - correct answers ✅[[0, 0], [0], []] How many values does a stereo sound file have for each sample? - correct answers ✅idk What is returned when scipi.io.wavfile.read is called? - correct answers ✅idk
