PY LISTS

Question 1

What is the purpose of Lists?

Answer 1

to store multiple items in a single variable

Question 2

What ate the 3 in built data types to store data and info

Answer 2

tuple, set, dictinary

Question 3

What are the characteristics of the List items

Answer 3

changeable, duplicate, indexed/ ordered
- indexed implies they have fixed order and any new item is added to the end of the list
- dupilcate values are allowed because lits are indexed
- changeable: we can delete, edit, add things to the list after it has been created

Question 4

_____ is the index number of the 1st list item

Answer 4

0

Question 5

_____ is another way of producing a list using doble round brackets

Answer 5

list constructor

Question 6

How can we access specific list items?

Answer 6

index numbers

Question 7

how can we obtain the last item or the ones preceding it in a list?

Answer 7

print(list[len(list)-1])
OR
We can do negative indexing

Question 8

[:6] when such a command has been produced what kind of output should we expect?

Answer 8

the output will start from 1st item and exclude the end value

Question 9

what output to expect with this command[2:]

Answer 9

the output will include the index item 2 and go on till the end

Question 10

____ keyword is used to determine if a specified item is present in the list

Answer 10

in

Question 11

how can we change.a specific item in the list

Answer 11

mylist[2] = “kd”
so the output will replace that index item with the new one

Question 12

how to change multiple items in the list?

Answer 12

using a range of index when producing the command for new words
list{2:4} = new items

Question 13

when will the length of the list change?

Answer 13

When number of items inserted does not match the no. of items replaced and the items will get adjusted accordingly

Question 14

if i replace more items than i insert, what will happen
eg;
mylist=[pen, pencil,pin,kit,kat]
mylist[2:4]=[book}

Answer 14

then items in the range index will change rest will get adjusted to it i.e. items in the position of 2 and 3 index values will get replaced by the sing;e item book

Question 15

____ fxn increases the list items without changing the items

Answer 15

mylist.insert(index number, “item”)
it increased the items in the list

Question 16

Use____ function to add items to the end of the list

Answer 16

append()

Question 17

___ fxn removes the item from the list

Answer 17

remove()

Question 18

____ method removes the specified index number

Answer 18

pop()

Question 19

Which method arrange the list in ascending order by default

Answer 19

sort()

Question 20

how canwe produce numbers arrnaged in descending order

Answer 20

list.sort(reverse=True)

Question 21

How to count a specified item in the list?

Answer 21

.count(“item”)

Question 22

____ fxn will produce a reversed order of the list

Answer 22

.reverse()

Question 23

how to add items to the end of the list

Answer 23

.extend()