Worksheet on python Lists

1. How can you create an empty list in Python?
   • A) list = []
   • B) list = {}
   • C) list = ()
   • D) list = //
2. Which function is used to add an element at the end of the list?
   • A) push()
   • B) append()
   • C) insert()
   • D) extend()
3. What does the len() function return when used with a list?
   • A) The first element of the list
   • B) The last element of the list
   • C) The number of elements in the list
   • D) A boolean value indicating if the list is empty
4. Which method inserts an item at a specified index in a list?
   • A) append()
   • B) extend()
   • C) insert()
   • D) add()
5. How can you remove the last item from a list and return it?
   • A) remove()
   • B) pop()
   • C) delete()
   • D) cut()
6. What does the count() method do?
   • A) Counts the total memory bytes consumed by the list
   • B) Returns the number of times a specified element appears in the list
   • C) Counts the number of sublists within the list
   • D) Returns the total number of characters in all the elements of the list
7. Which method would you use to reverse the order of elements in a list in place?
   • A) reverse()
   • B) reversed()
   • C) invert()
   • D) backwards()
8. If you want to find the largest number in a list of integers, which function would you use?
   • A) max()
   • B) min()
   • C) sum()
   • D) sort()
9. What is the result of list("hello")?
   • A) ['h', 'e', 'l', 'l', 'o']
   • B) ['hello']
   • C) ['h', 'e', 'l', 'o']
   • D) ['e', 'l']
10. How do you check if two lists l1 and l2 are equal?

• A) l1 == l2
• B) l1.equals(l2)
• C) compare(l1, l2)
• D) l1 and l2

11. Which method adds elements of a list to another list?

• A) append()
• B) extend()
• C) insert()
• D) add()

12. What will mylist[2:5] return if mylist = [10, 20, 30, 40, 50, 60]?

• A) [30, 40, 50]
• B) [20, 30, 40]
• C) [30, 40]
• D) [20, 30, 40, 50]

13. What does the sort() method do to the list?

• A) Sorts the list in descending order by default
• B) Sorts the list in ascending order by default
• C) Shuffles the list randomly
• D) Reverses the list

14. Which line of code will cause an error?

• A) nums = list("1234")
• B) nums = list(1234)
• C) nums = [1, 2, 3, 4]
• D) nums = list((1, 2, 3, 4))

15. Which of the following is not a valid list?

• A) a = [1, 2, 3]
• B) b = (1, 2, 3)
• C) c = [1, [2, 3], [4, 5]]
• D) d = []

16. How do you access the first element of a list named ‘items’?

• A) items(0)
• B) items[1]
• C) items[0]
• D) first(items)

17. Which function will give the total sum of the numeric list numbers?

• A) sum(numbers)
• B) total(numbers)
• C) add(numbers)
• D) summarize(numbers)

18. What will be the index of the first occurrence of 2 in the list [1, 2, 3, 2, 2]?

• A) 0
• B) 1
• C) 2
• D) 3

19. Which list method is used to remove an item by its value?

• A) delete()
• B) remove()
• C) pop()
• D) discard()

20. How can you combine two lists list1 and list2?

• A) list1 + list2
• B) list1.append(list2)
• C) list1.extend(list2)
• D) list1 and list2

21. What does mylist[:3] return if mylist = [0, 1, 2, 3, 4, 5]?

• A) [0, 1, 2]
• B) [1, 2, 3]
• C) [0, 1, 2, 3]
• D) [1, 2, 3, 4]

22. How can you slice a list to return every second item from the list mylist?

• A) mylist[::2]
• B) mylist[2::]
• C) mylist[:2]
• D) mylist[2]

23. What will ['a', 'b', 'c', 'd', 'e'][1:-1] produce?

• A) ['b', 'c', 'd']
• B) ['a', 'b', 'c', 'd']
• C) ['c', 'd', 'e']
• D) ['b', 'c']

24. If data = [10, 20, 30, 40, 50], what will data[-2:] return?

• A) [30, 40, 50]
• B) [40, 50]
• C) [10, 20]
• D) [20, 30]

25. To reverse the list using slicing, what should you do?

• A) list[::-1]
• B) list[1::-1]
• C) list[::-2]
• D) list[1::1]

26. Which slice operation returns the sublist without the first and last elements?

• A) mylist[1:-1]
• B) mylist[:-1]
• C) mylist[1:]
• D) mylist[::1]

27. What will mylist[3:6] return if mylist = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h']?

• A) ['d', 'e', 'f']
• B) ['c', 'd', 'e']
• C) ['d', 'e', 'f', 'g']
• D) ['e', 'f', 'g']

28. How can you slice a list to exclude the last item?

• A) list[:-1]
• B) list[-1:]
• C) list[1:-1]
• D) list[-1]

29. Which slicing operation includes only the first three elements of a list?

• A) list[3:]
• B) list[:3]
• C) list[0:3]
• D) list[-3:]

30. What does list[2:-2] do?

• A) Returns all elements except the first two and last two
• B) Returns only the middle two elements
• C) Returns the