Python

The code I already have is pictured below as well as what I am supposed to add to it$.$

If option $1$ is chosen, the program is to display the inventory in a tabular format as requested in M$3$Pro AND do the following:

$-$ write the information $($SAME FORMAT$)$ to a txt report titled "enventory.txt$"$

$-$ write the book information, same information displayed, into a csv file. The file is to be named "env$\_$report.csv$".$

$-$ The csv file is to have the following column names $($Book Name, Author, Year Pub, Price$),$ each piece of information is to be written under the right column.

if option $2$ is chosen, do the following:

$-$ Display the list of books $($similar to how it was displayed in M$3$Pro$)$

$-$ Ask the user to enter the book number they want to buy $($exactly how it worked in M$3$Pro$)$

$-$ Ask the user if they wish to buy another book $($yes$/$no$),$ again just how it worked in M$3$Pro.

$-$ Once the user no longer wants to buy books $($entered no$),$ go back to main menu

if option $3$ is chosen, do the following:

$-$ Display details of books purchased, exactly how it was requested and displayed in M$3$Pro

$-$ Write the purchased book details in a csv report titled "purchased.csv$"$

$-$ The csv file is to have the following column names $($Book Name, Author, Year Pub, Price$),$ each piece of information is to be written under the right column.

$-$ After writing the book information in the csv file, write the book cost, tax and total price in the csv file $($Below the last populated row$),$ see example below

if option $4$ chosen, notify the user that the program will terminate and stop the program

if a value other than $\backslash (1,2,3\backslash )$ or $4$ is entered, display a message that notifies the user that an incorrect menu choice was entered and display the menu again.

Important points to remember...

$-$ The program is to only terminate If the user enters $4.$

$-$ Don't forget pseudocode

$-$ If new functions are created, don't forget to assign them docstrings $```$

#function to display list of books

#lists

authors $=["$William Shakespeare","Charles Dickens","James Joyce","Earnest Hemingway","J$.$K$.$ Rowling"$]$

books $=["$Hamlet$",$"A Tale of Two Cities","Ulysses","The Old Man and the Sea","Harry Potter and the Philosopher's Stone"$]$

published $=[1601,1859,1922,1952,1997]$

#list of book names

#list referencing book prices

prices $=[14\mathrm{.}52,9\mathrm{.}56,19\mathrm{.}97,10\mathrm{.}35,16\mathrm{.}62]$

def book$\_$display$()$:

$\text{'}\text{'}\text{'}$

function displays book information. Information retrieved from $4$ different lists

Returns

$-------$

None.

print$($f$\text{'}\{"$Num$"$:$<mn>5</mn><mi>\}</mi><mi>\{</mi><mi>"</mi>$Book$"$:$<mn>6</mn><mn>0</mn><mi>\}</mi><mtext></mtext><mi>\{</mi><mi>"</mi>$Author$"$:$<mn>3</mn><mn>0</mn><mi>\}</mi><mtext></mtext><mi>\{</mi><mi>"</mi>$Year$"$:$<mn>8</mn><mi>\}</mi><mtext></mtext><mi>\{</mi><mi>"</mi>$Price$"\}\text{'})$

print$(\text{'}-\text{'}*120)$

for i in range$($len$($authors$))$:

print$($f$\text{'}\{$i$+$l:$<mn>5</mn><mi>\}</mi><mi>\{</mi>$books$[$i$]$:$<mn>6</mn><mn>0</mn><mi>\}</mi><mi>\{</mi>$authors$[$i$]$:$<mn>3</mn><mn>0</mn><mi>\}</mi><mi>\{</mi>$published$[$i$]$:$<mn>8</mn><mi>\}</mi>$$$\{$prices$[$i$]\}\text{'})$

print$(\text{'}-\text{'}*120)$

def show$\_$purchase$($book$\_$nums$)$:

$\text{'}\text{'}\text{'}$

Parameters

$----------$

book$\_$nums : list, references index number for books user wants to purchase

function displays information on the books selected

Returns

$-------$

None.

$"\text{'}$

# create

print$()$

print$($f$\text{'}\{"$Book$"$:$<mn>6</mn><mn>0</mn><mi>\}</mi><mi>\{</mi><mi>"</mi>$Author$"$:$<mn>3</mn><mn>0</mn><mi>\}</mi><mtext></mtext><mi>\{</mi><mi>"</mi>$Year$"$:$<mn>8</mn><mi>\}</mi><mi>\{</mi><mi>"</mi>$Price$"\}\text{'})$

print$(\text{'}-\text{'}*115)$

for i in book$\_$nums:

print$($f$\text{'}\{$books$[$i$]$:$<mn>6</mn><mn>0</mn><mi>\}</mi><mi>\{</mi>$authors$[$i$]$:$<mn>3</mn><mn>0</mn><mi>\}</mi><mi>\{</mi>$published$[$i$]$:$<mn>8</mn><mi>\}</mi>$$$\{$prices$[$i$]\}\text{'})$

$``````$

def totals$($book$\_$nums$)$:

$\text{'}\text{'}\text{'}$

Parameters

$----------$

book$\_$nums : list, references index number for books user wants to purchase

Returns

$-------$

cost : price total for books chosen

tax : $5\%$ tax on total price

total : cost $+$ tax

$\text{'}\text{'}\text{'}$

pur$\_$prices $=[]$

for i in book$\_$nums:

# get prices

price $=$ prices$[$i$]$

pur$\_$prices.append $($price$)$

# add cost of both books

cost $=$ sum$($pur$\_$prices$)$

tax $=$ cost $*0\mathrm{.}05$

total $=$ cost $+$ tax

return cost, tax, total

$```$ File Edit Format Run Options Window Help

$|$import m$3\_$functions as fn

def main$()$:

$\backslash$#display book list

fn$.$book$\_$display$()$

book$\_$nums $=[]$

run$\_$again $=\text{'}$ y $\text{'}$

While run$\_$again $==\text{'}$y$\text{'}$:

$\backslash$#ask user to enter book num

book$\_$num $=$ int$($input$("$

Enter number of book you want to buy: $"))\backslash$# append to book$\_$nums after subtracting $1($to get accurate index num$)$

$\backslash$# find book info $($in all lists$)$

book$\_$num $-=1$

book$\_$nums. append $($book$\_$num$)$

run$\_$again $=$ input$("$

Would you like to purchase another book? $($y for yes$)$ :$")$

$\backslash$#pass to show$\_$purchase function

fn$.$show$\_$purchase $($book$\_$nums$)$

cost$,$ t$$x$,$ total $\backslash (=\backslash$mathrm$\{$fn$\}^\{-\}\backslash ).$totals $($book$\_$nums$)$

print$("$

Total price $($cost of book$($s$)+5\backslash \%$ tax$)$:$")$

print$($f$\text{'}$Book$($s$)$ cost Before Tax $\backslash$$$\backslash \{$cost:$,\mathrm{.}2$f$\backslash \}\text{'})$

print$($f$\text{'}$Tax $\backslash$$$\backslash \{$tax:$,\mathrm{.}2$f$\backslash \}\text{'})$

print$($f$\text{'}$Total After Tax $\backslash$$$\backslash \{$total:$,\mathrm{.}2$f$\backslash \}\text{'})$

$\backslash$# Call the main function.

if $\backslash (\backslash$underset$\{\backslash$operatorname$\{$main$\}()\}\{\backslash$text $\{$ name $\}\}==\backslash )"\_\_$main$\_\_"$: