PCEP Certification Practice: Tuples vs. Lists - Differences and Similarities

Question 1: Which of the following is a key difference between tuples and lists in Python?

1. Tuples are mutable, and lists are immutable.
2. Tuples are immutable, and lists are mutable.
3. Both tuples and lists are mutable.
4. Both tuples and lists are immutable.

Question 2: What is the correct syntax to create an empty tuple?

1. my_tuple = {}
2. my_tuple = []
3. my_tuple = ()
4. my_tuple = [[]]

Question 3: Which of the following operations is allowed on both tuples and lists?

1. Adding elements
2. Removing elements
3. Accessing elements by index
4. Modifying elements

Question 4: Which of the following characteristics are true for both tuples and lists? (Choose all that apply)

1. Both are ordered collections.
2. Both are immutable.
3. Both can contain elements of different data types.
4. Both support slicing.

Question 5: Which of the following operations can be performed on lists but not on tuples? (Choose two)

1. Adding elements
2. Accessing elements by index
3. Removing elements
4. Reversing the order of elements

Question 6: Tuples are __________, meaning their elements cannot be modified after they are created.

Question 7: Lists are __________, allowing changes to their elements after they are created.

Question 8: Arrange the following code snippets in the correct order to create a list and a tuple with the same elements, and then print both:

• my_tuple = (1, 2, 3)
• print(my_list, my_tuple)
• my_list = [1, 2, 3]

Question 9: Arrange the following code snippets in the correct order to access and print the second element of a list and a tuple:

• my_tuple = ('a', 'b', 'c')
• my_list = ['x', 'y', 'z']
• print(my_list[1], my_tuple[1])

Question 10: Complete the code to create a list and a tuple with the elements "apple", "banana", and "cherry":

my_list = __________
my_tuple = __________

Question 11: Complete the code to slice the tuple my_tuple to get the first two elements:

sliced_tuple = my_tuple[__________]

Question 12: Insert the correct code to modify the first element of a list named my_list and try to modify the first element of a tuple named my_tuple:

my_list[0] = 'new_value'
my_tuple[0] = 'new_value'

Question 13: Insert the correct code to check if the value 42 is present in both a list and a tuple:

if 42 in my_list and 42 in my_tuple:
    print("Found in both")

Question 14: Rearrange the code to create a tuple, access its first element, and print the result:

• first_element = numbers[0]
• print(first_element)
• numbers = (10, 20, 30)

Question 15: Organize the steps to create a list and a tuple, add an element to the list, and print both:

• my_list = [1, 2, 3]
• my_list.append(4)
• my_tuple = (1, 2, 3)
• print(my_list, my_tuple)

Question 16: What does the following code output?

my_tuple = (5, 10, 15)
print(len(my_tuple))

1. 2
2. 3
3. 4
4. 5

17. What does the following code output?

my_list = [1, 2, 3]
my_tuple = (1, 2, 3)
my_list[1] = 20
my_tuple[1] = 20
print(my_list, my_tuple)

1. [1, 20, 3] (1, 2, 3)
2. Error
3. [1, 2, 3] (1, 20, 3)
4. [1, 20, 3] (1, 20, 3)

Question 18: Lists are immutable, while tuples are mutable.

1. True
2. False

Question 19: Both lists and tuples allow duplicate elements.

1. True
2. False

Question 20: What happens if you try to change the value of an element in a tuple?

1. The element is updated.
2. A new tuple is created with the updated value.
3. An IndexError is raised.
4. A TypeError is raised.

Question 21: Which of the following operations can be performed on tuples but not on lists?

1. Accessing elements by index
2. Concatenation
3. Iteration
4. None of the above

Question 22: Which of the following expressions correctly concatenates two tuples?

1. tuple1 + tuple2
2. tuple1.append(tuple2)
3. tuple1.extend(tuple2)
4. tuple1.union(tuple2)

Question 23: Tuples are often used to store data that should not be __________.

Question 24: Lists are __________ collections, while tuples are immutable collections.

Question 25: What is the output of the following code?

fruits = ['apple', 'banana', 'cherry']
fruits[1] = 'blueberry'
print(fruits)

1. ['apple', 'banana', 'cherry']
2. ['apple', 'blueberry', 'cherry']
3. Error
4. d) None