Create a function called display$\_$as$\_$list

display$\_$as$\_$list has three parameters

display$\_$items

message

counter$\_$reqd

display$\_$items is mandatory and both message and counter$\_$reqd are optional.

display$\_$items is the list of items that needs to be displayed.

message is what might be displayed before each item is displayed. message is a string and defaults to 'Item'.

The message string must not be modified.

counter$\_$reqd is boolean and defaults to True.

If there are items in the list, the function displays them as required and returns True. See the examples below.

If there are no items in the list, the function informs the user accordingly and returns False. See the example below.

If counter$\_$reqd is True then on each line, display the message, counter and item. If counter$\_$reqd is False then on each line, only display the item, not the message or the counter.

display$\_$as$\_$list prints a blank line before printing the individual elements of the list on separate lines as per the examples below.

Hints.

Use print$()$ to generate the blank line.

The solution is between $9$ and $13$ lines of code ignoring blank lines, comments and the docstring.

Ensure you test for the expected return type and value.

Not all of the tests that are used are shown.

As per the instructions, only paste the function code into the answer box. Do not include any testing code.

The same applies for all the other questions in this lab.

For example:

Test Result

recipe$\_$instructions $=[\text{'}$Toast bread', 'Spread butter', 'Spread marmite'$]$

shopping$\_$message $=$ 'Shopping item'

purchase$\_$message $=$ 'Purchase item'

# Use passing by position.

# Leave message and counter$\_$reqd as their defaults

return$\_$value $=$ display$\_$as$\_$list$($recipe$\_$instructions$)$

# Use passing by name

# Pass value by name for display$\_$items

# Leave message and counter$\_$reqd as their defaults

return$\_$value $=$ display$\_$as$\_$list$($display$\_$items$=$recipe$\_$instructions$)$

# Use passing by name

# Pass value by name for display$\_$items and message

# counter$\_$reqd as the default

return$\_$value $=$ display$\_$as$\_$list$($display$\_$items$=$recipe$\_$instructions, message$=$shopping$\_$message$)$

print$($f$\text{'}$The function returned $\{$return$\_$value$\}\text{'})$

# Use passing by name

# Pass value by name for display$\_$items, message and counter$\_$reqd $($explicit as True$)$

return$\_$value $=$ display$\_$as$\_$list$($display$\_$items$=$recipe$\_$instructions, message$=$purchase$\_$message, counter$\_$reqd$=$True$)$

print$($f$\text{'}$The function returned $\{$return$\_$value$\}\text{'})$

# Use passing by name

# Pass value by name for display$\_$items, message and counter$\_$reqd

# No counter displayed

return$\_$value $=$ display$\_$as$\_$list$($display$\_$items$=$recipe$\_$instructions, message$=$purchase$\_$message, counter$\_$reqd$=$False$)$

print$($f$\text{'}$The function returned $\{$return$\_$value$\}\text{'})$

Item $1$: Toast bread

Item $2$: Spread butter

Item $3$: Spread marmite

Item $1$: Toast bread

Item $2$: Spread butter

Item $3$: Spread marmite

Shopping item $1$: Toast bread

Shopping item $2$: Spread butter

Shopping item $3$: Spread marmite

The function returned True

Purchase item $1$: Toast bread

Purchase item $2$: Spread butter

Purchase item $3$: Spread marmite

The function returned True

Toast bread

Spread butter

Spread marmite

The function returned True

# Test for empty list

# Use passing by name

# Pass value by name for display$\_$items and counter$\_$reqd

# Leave message as default

recipe$\_$instructions $=[]$

return$\_$value $=$ display$\_$as$\_$list$($display$\_$items $=$ recipe$\_$instructions, counter$\_$reqd $=$ True$)$

instructions $=[]$

return$\_$value $=$ display$\_$as$\_$list$($display$\_$items $=$ instructions, counter$\_$reqd $=$ False$)$

Sorry, the list is empty.

Sorry, the list is empty.

# Display shopping list options

shopping$\_$options $=[$

'Shopping list options.$\text{'},$

$\text{'}$A$)$ Add an item.$\text{'},$

$\text{'}$R$)$ Remove an item by its item number.$\text{'},$

$\text{'}$D$)$ Display the total number of items in the list.$\text{'},$

$\text{'}$L$)$ List all the items.$\text{'},$

$\text{'}$S$)$ Sort the list.$\text{'},$

$\text{'}$E$)$ Empty the list.$\text{'},$

$\text{'}$C$)$ Count the instances of an item in the list.$\text{'},$

$\text{'}$Q$)$ Quit.$\text{'}$

$]$

# Pass by both position and name

return$\_$value $=$ display$\_$as$\_$list$($shopping$\_$options, counter$\_$reqd $=$ False$)$

Shopping list options.

A$)$ Add an item.

R$)$ Remove an item by its item number.

D$)$ Display the total number of items in the list.

L$)$ List all the items.

S$)$ Sort the list.

E$)$ Empty the list.

C$)$ Count the instances of an item in the list.

Q$)$ Quit.