$,$ you are required to create a program that could be used by a bookstore to check their book inventory.

Notice the inventory is a dictionary and each element in the dictionary references a list of nested dictionaries, so there are three levels of nesting.

$```$

book$\_$inventory $=\{\backslash$William Shakespear"

Key$1$

$```$

$```$

$\{"$book$\_$name": "Romeo and Juliet", "year$\_$pub": $1597,$ "price": $12\mathrm{.}99,$ "quantity": $60\}\}$

"Charles Dickens": $[$

$\{"$book$\_$name": "A Tale of Two Cities", "year$\_$pub": $1859,$ "price": $9\mathrm{.}56,$ "quantity": $75\},$

$\{"$book$\_$name": "Great Expectations", "year$\_$pub": $1861,$ "price": $12\mathrm{.}50,$ "quantity": $60\},$

$\{"$book$\_$name": "Oliver Twist", "year$\_$pub": $1837,$ "price": $9\mathrm{.}75,$ "quantity": $50\},$

$1.$

"James Joyce":

$\{"$book$\_$name": "Ulysses", "year$\_$pub"; $1922,$ "price"; $19\mathrm{.}99,$ "quantity"; $30\},$

$\{"$book$\_$name": "A Portrait of the Artist as a Young Man", "year$\_$pub": $1916,$ "price": $13\mathrm{.}20,$ "quantity": $25\},$

book$\_$name": "Dubliners", "year$\_$pub": $1914,$ "price": $12\mathrm{.}00,$ "quantity": $35\},$

$1.$

$```$

$```$

"Ernest Hemingray"t $\backslash \backslash$

$\{"$book$\_$name": "The $[$

$\{"$book$\_$name": "A Fareell A $\backslash$ pricen, $10\mathrm{.}35,$ quantity": $80\},$

"book$\_$name": "For$\_$sewell to Arms", "year$\_$pub": $1929,$ "price": $14\mathrm{.}75,$ "quantity": $45\},$

$\{"$book$\_$name": "The Sun Also Rises", "year$\_$pub": $1926,$ "price": $12\mathrm{.}99,$ "quantity": $55\}$

Key$5\backslash ,\backslash$$$,$

$```$

$```$

$\{"$book$\_$name : "Harry Potter and the Philosopher's Stone", "year$\_$pub": $1997,$ "price": $16\mathrm{.}62,$ "quantity": $100\},$

"book$\_$name": "Harry Potter and the Chamber of Secrets", "year$\_$pub": $1998,$ "price": $22\mathrm{.}99,$ "quantity": $90\},$

$\{"$book$\_$name": "Harry Potter and the Prisoner of Azkaban", "year$\_$pub": $1999,$ "price": $23\mathrm{.}99,$ "quantity": $85\},$

$\{"$book$\_$name": "Harry Potter and the Goblet of Fire", "year$\_$pub": $2000,$ "price": $25\mathrm{.}99,$ "quantity": $80\}$

$]\}$

$```$

Notice the following:

$1.$ The inventory name is a dictionary named "book$\_$inventory"

$2.$ The inventory dictionary references $5$ authors$($keys$),$ "William Shakespear", "Charles Dickens" "James Joyce","Ernest Hemingway" and $"$J$.$K$.$ Rowling". information for one of the books written by the autor

Instructions:

$1.$ Add a main$()$ function to the main program and create the inventory dictionary shown above in the main function. Make sure it looks like the image shown above.

$2.$ The purpose of this program is to allow the business owner to check their inventory and calculate totals.