Chapter 3: Lists

Question 1

create a simple list and print out the list as a whole

Answer 1

bicycles = [‘trek’, ‘Cannondale’, ‘redline’, ‘specialized’]

print(bicycles)

Question 2

access every element in the list individually and print them out

Answer 2

bicycles = [‘trek’, ‘Cannondale’, ‘redline’, ‘specialized’]

print(bicycles[0])

Question 3

use string methods on each of the elements of the list to change the case of the elements

Answer 3

print(bicycles[0].title())

Question 4

access the last element in the list

Answer 4

print(bicycles[-1])

Question 5

create an f-string in a variable to put an element of a list into the string. then print the string out

Answer 5

bicycles = [‘trek’, ‘Cannondale’, ‘redline’, ‘specialized’]
var = f”I really like the bikes made by {bicycles[0].title()}”)
print(var)

Question 6

modify an element in a list

Answer 6

motorcycles = [‘honda’, ‘yamaha’, ‘suzuki’]
motorcycles[0] = ‘ducati’
print(motorcycles[0])

Question 7

add an element to the list using .append()

Answer 7

motorcycles = [‘honda’, ‘yamaha’, ‘suzuki’]
motorcycles.append(‘ducati’)
print(motorcycles)

Question 8

create another empty list and then add elements to it

Answer 8

var = []
var.append('    ')
var.append('    ')
var.append('    ')
print(var)

Question 9

use insert to add an element anywhere in the list

Answer 9

motorcycles = [‘honda’, ‘yamaha’, ‘suzuki’]
motorcyles.insert(2, ‘ducati’)
print(motorcycles)

Question 10

use the delete function to remove an item from anywhere in the list

Answer 10

motorcycles = [‘honda’, ‘yamaha’, ‘suzuki’]
del motorcycles[0]
print(motorcycles)

Question 11

use the pop method to move an element from a list to a variable

Answer 11

motorcycles = [‘honda’, ‘yamaha’, ‘suzuki’]
popped_cycle = motorcycles.pop()
print(popped_cycles)

Question 12

add a popped variable to an f-string

Answer 12

motorcycles = [‘honda’, ‘yamaha’, ‘suzuki’]
popped_cycle = motorcycles.pop()
print(f”The last motorcycle I owned was a {popped_cycle.title()}”)

Question 13

pop an item from anywhere in a list

Answer 13

motorcycles = ['honda', 'yamaha', 'suzuki']
popped_cycle = motorcycles.pop(0)

Question 14

use remove to remove an element by its value

Answer 14

motorcycles = [‘honda’, ‘yamaha’, ‘suzuki’]

motorcycles.remove(‘honda’)

Question 15

use .remove to remove an item from the list using a variable that contains that value

Answer 15

motorcycles = [‘honda’, ‘yamaha’, ‘suzuki’, ducati’]
too_expensive = ‘ducati’
motorcycles.remove(too_expensive)
print(motorcycles)

Question 16

sort a list alphabetically

Answer 16

cars = [‘bmw’, ‘audi’, ‘toyota’, ‘subaru’]
cars.sort()
print(cars)

Question 17

use .sort to sort the original list in reverse

Answer 17

cars = [‘bmw’, ‘audi’, ‘toyota’, ‘subaru’]

cars.sort(reverse=True)

Question 18

use sorted to temporarily sort a list

Answer 18

cars = [‘bmw’, ‘audi’, ‘toyota’, ‘subaru’]
print(“here is the original list:”)
print(cars)

print(“\nHere is the sorted list:”)
print(sorted(cars))

print(“\nhere is the original list again:”)
print(cars)

Question 19

print a list in reverse using .reverse

Answer 19

cars.reverse()

print(cars)

Question 20

find the length of the list

Answer 20

print(len(cars))