Lists

Question 1

Lists

Answer 1

Ordered sequences that can hold a variety of object types

Question 2

.append

Answer 2

Add a variable to the end of a list

my_list.append(‘seven’)

Question 3

.pop

Answer 3

Pop a variable off a list. Defaults to the last variable, but can be changed with index number

my_list.pop() / my_list.pop(3)

Question 4

.sort

Answer 4

Sorts a list in alphabetical or numerical order.

Note: Doesn’t return anything, sorts it in place. Must call the list to see the sorted variables.

my_sorted_list = my_list.sort()
This wont work because of the note above

new_list.sort()
my_sorted_list = new_list
This will work

Question 5

.reverse

Answer 5

Puts the variables in a list in reverse order. Just like the .sort function it happens in place and does not return anything unless called.

Question 6

Dictionary vs. List

Answer 6

{ } Dictionaries:

• Unordered and cannot be sorted
• Objects retrieved by key name

[ ] Lists:

• Ordered sequence can be indexed or sliced
• Objects retrieved by key name