13. Python Lists - Quiz

1. Which of the following commands will correctly create a list in Python?

list1 = list() list1 = [] list1 = list([1, 2, 3]) All of the mentioned

Answer: All of the mentioned

2. Suppose list1 is [2, 33, 222, 14, 25]. What is the result of list1[-1]?

2 Error 25 None

Answer: 25

3. Which method is used to add a single element to the end of a list?

add() append() extend() insert()

Answer: append()

4. What is the output when executing list("hello")?

['h', 'e', 'l', 'l', 'o'] ['hello'] ['olleh'] SyntaxError

Answer: ['h', 'e', 'l', 'l', 'o']

5. Which function returns the number of elements in a list?

size() len() length() count()

Answer: len()

6. What is the output of the following code?

list1 = [1, 2, 3]
list2 = list1
list1[0] = 4
print(list2)

[1, 2, 3] [4, 2, 3] [4, 1, 2, 3] Error

Answer: [4, 2, 3]

7. What is the primary difference between list.sort() and the sorted() function?

sort() can handle any iterable, while sorted() only works on lists. sort() returns a new list, while sorted() modifies the list in place. sort() modifies the list in place and returns None, while sorted() returns a new sorted list. There is no difference; they are aliases for the same function.

Answer: sort() modifies the list in place and returns None, while sorted() returns a new sorted list.

8. What will be the output of the following code?

numbers = [4, 2, 8, 1]
result = numbers.sort()
print(result)

[1, 2, 4, 8] None [8, 4, 2, 1] Error

Answer: None

9. Which parameter is used to sort a list in descending order?

order="desc" descending=True reverse=True sort_type="reverse"

Answer: reverse=True

10. Consider the following code snippet. What is the output?

words = ["apple", "banana", "kiwi", "cherry"]
words.sort(key=len)
print(words)

['apple', 'banana', 'cherry', 'kiwi'] ['banana', 'cherry', 'apple', 'kiwi'] ['kiwi', 'apple', 'banana', 'cherry'] (Note: If lengths are equal, it maintains original relative order due to stability) ['kiwi', 'apple', 'cherry', 'banana']

Answer: ['kiwi', 'apple', 'banana', 'cherry']

11. What is the output of the following code?

my_list = [10, 20, 30]
print(my_list.reverse())

[30, 20, 10] None [10, 20, 30] Error

Answer: None

12. Which of the following methods returns a new reversed list without modifying the original?

list.reverse() reversed(list) list[::-1] list.sort(reverse=True)

Answer: list[::-1]

Score: 0 / 0 answered