Question 1

Which of the following statements about lists in Python is TRUE?

Accepted Answer

Lists are mutable and can contain elements of different data types.

Question 2

Given the list $$team = ["Seahawks", 2014, "CenturyLink Field"]$$, what is the value of $$team[-1]$$?

Accepted Answer

$$"CenturyLink Field"$$

Question 3

Suppose you have $$nums = [5, 10, 4, 5]. $$What is the result of $$nums.count(5)$$?

Accepted Answer

$$2$$

Question 4

What will be the output of the following code?

$$words = ["spam", "ni"]$$
$$words[1] = "eggs"$$
$$print(words)$$

Accepted Answer

$$["spam", "eggs"]$$

Question 5

Which of the following will result in an error in Python?

Accepted Answer

$$list(9876543219)$$

Question 6

Given $$L = ["sentence", "contains", "five", "words"]$$, which code will insert "This" as the first element?

Accepted Answer

$$L.insert(0, "This")$$

Question 7

Suppose you have $$grades = [40, 35, 14, 98, 100]. To $$calculate the average after dropping the two lowest grades, which code is correct?

Accepted Answer

$$grades.sort()$$ $$average = sum(grades[2:]) / 3$$

Question 8

What is the result of the following slice operation?

$$list1 = ["a", "b", "c", "d", "e", "f"]$$
$$print(list1[2:4])$$

Accepted Answer

$$["c", "d"]$$

Question 9

Which of the following statements about tuples is FALSE?

Accepted Answer

Tuples support methods like append and remove.

Question 10

Given $$t = (5, 7, 16, 12)$$, what is the value of $$t[-1]$$?

Accepted Answer

$$12$$

Question 11

Which of the following best describes the difference between lists and tuples in Python?

Accepted Answer

Lists are mutable, while tuples are immutable.

Question 12

Suppose you have $$regions = [["Northeast", 55.3], ["Midwest", 66.9], ["South", 114.6], ["West", 71.9]]. $$What is the correct way to access the population of the Midwest?

Accepted Answer

$$regions[1][1]$$

Question 13

If you want to copy a list $$list1 so $$that changes to the new list do NOT affect $$list1$$, which method should you use?

Accepted Answer

$$list2 = list(list1)$$

Question 14

What is the output of the following code?

$$line = ["To", "be", "or", "not", "to", "be."]$$
$$print(" ".join(line))$$

Accepted Answer

$$To be or not to be.$$

Question 15

Which of the following statements about mutability is TRUE?

Accepted Answer

Lists are mutable, but numbers, strings, and tuples are immutable.

Question 16

Given $$nums = [5, 10, 4, 5]$$, what is the result of $$nums.index(4)$$?

Accepted Answer

$$2$$

Question 17

Suppose you want to split a string $$s = "a,b,c"$$ into a list of its components. Which code will achieve this?

Accepted Answer

$$s.split(",")$$

Question 18

Which of the following will remove the first occurrence of the value $$5$$ from the list $$nums = [5, 10, 4, 5]$$?

Accepted Answer

$$nums.remove(5)$$

Question 19

Consider the following code:

$$x, y = 5, 10$$
$$x, y = y, x$$
What are the values of $$x$$ and $$y$$ after execution?

Accepted Answer

$$x = 10, y = 5$$

Question 20

A company stores employee data as $$employees = [["Prem", 40, 20], ["Shuyuan", 24, 15], ["Mufan", 32, 12]]$$, where each sublist contains [name, hours worked, pay per hour]. What code calculates the total weekly payment?

Accepted Answer

$$total = employees[0][1]*employees[0][2] + employees[1][1]*employees[1][2] + employees[2][1]*employees[2][2]$$

Programming with Lists and Tuples in Python

Study Guide - Practice Questions

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