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Python Data Structures Week 4 Quiz Answers

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Python Data Structures

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Python Data Structures Week 4 Quiz Answers

Chapter Eight: Lists

Question 1) How are โ€œcollectionโ€ variables different from normal variables?

  • Collection variables can only store a single value
  • Collection variables pull multiple network documents together
  • Collection variables merge streams of output into a single stream
  • Collection variables can store multiple values in a single variable

Question 2) What are the Python keywords used to construct a loop to iterate through a list?

  • for / in
  • def / return
  • foreach / in
  • try / except

Question 3) For the following list, how would you print out โ€˜Sallyโ€™?

friends = [ 'Joseph', 'Glenn', 'Sally' ]
  • print friends[3]
  • print(friends[2:1])
  • print(friends[2])
  • print(friends[โ€˜Sallyโ€™])

Question 4) What would the following Python code print out?

fruit = 'Banana'
fruit[0] = 'b'
print(fruit)
  • banana
  • b
  • B
  • [0]
  • Banana
  • Nothing would print โ€“ the program fails with a traceback error</span >

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Question 5) Which of the following Python statements would print out the length of a list stored in the variable data?

  • print(strlen(data))
  • print(data.Len)
  • print(length(data))
  • print(data.length)
  • print(len(data))
  • print(data.length())

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Question 6) What type of data is produced when you call the range() function?1x = list(range(5)).

  • A string
  • A list of integers
  • A list of characters
  • A boolean (true/false) value
  • A list of words

Question 7) What does the following Python code print out?

a = [1, 2, 3]
b = [4, 5, 6]
c = a + b
print(len(c))
  • [1, 2, 3]
  • [4, 5, 6]
  • [1, 2, 3, 4, 5, 6]
  • 15
  • 6
  • 21

Question 8) Which of the following slicing operations will produce the list [12, 3]?

  • t = [9, 41, 12, 3, 74, 15]
  • t[1:3]
  • t[2:2]
  • t[2:4]
  • t[:]
  • t[12:3]

Question 9) What list method adds a new item to the end of an existing list?

  • push()
  • add()
  • pop()
  • index()
  • forward()
  • append()

Question 10) What will the following Python code print out?

friends = [ 'Joseph', 'Glenn', 'Sally' ]
friends.sort()
print(friends[0])
  • Glenn
  • Joseph
  • friends
  • Sally