The following code was written by you guys earlier but it fails when I pass the below signature.

cost$\_$calculator$([],["$ham$",$ "anchovy"$],$ drinks$=["$tub$",$ "tub"$],$ coupon$=0\mathrm{.}1)$

cost$\_$calculator$([],[],["$pepperoni$",$ "pepperoni"$],$ wings$=[10,20],$ drinks$=["$small$"])$

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def cost$\_$calculator$($pizzas$=[],$ drinks$=[],$ wings$=[],$ coupon$=0)$:

# Define prices for each item

base$\_$pizza$\_$price $=13\mathrm{.}00$

toppings$\_$prices $=\{$

"pepperoni": $1\mathrm{.}00,$

"mushroom": $0\mathrm{.}50,$

"olive": $0\mathrm{.}50,$

"anchovy": $2\mathrm{.}00,$

"ham": $1\mathrm{.}50$

$\}$

drinks$\_$prices $=\{$

"small": $2\mathrm{.}00,$

"medium": $3\mathrm{.}00,$

"large": $3\mathrm{.}50,$

"tub": $3\mathrm{.}75$

$\}$

wings$\_$prices $=\{$

$10$: $5\mathrm{.}00,$

$20$: $9\mathrm{.}00,$

$40$: $17\mathrm{.}50,$

$100$: $48\mathrm{.}00$

$\}$

# Calculate the cost for pizzas

pizza$\_$cost $=$ sum$($base$\_$pizza$\_$price $+$ sum$($toppings$\_$prices.get$($topping$,0)$ for topping in pizza$)$ for pizza in pizzas$)$

# Calculate the cost for drinks

drink$\_$cost $=$ sum$($drinks$\_$prices.get$($size$,0)$ for size in drinks$)$

# Calculate the cost for wings

wing$\_$cost $=$ sum$($wings$\_$prices.get$($quantity$,0)$ for quantity in wings$)$

# Calculate total cost before coupon

total$\_$cost$\_$before$\_$coupon $=$ pizza$\_$cost $+$ drink$\_$cost $+$ wing$\_$cost

# Apply coupon discount

discount $=$ total$\_$cost$\_$before$\_$coupon $*($coupon $/100)$ # Coupon value is assumed to be a percentage

total$\_$cost$\_$after$\_$discount $=$ total$\_$cost$\_$before$\_$coupon $-$ discount

# Apply tax

tax $=$ total$\_$cost$\_$after$\_$discount $*0\mathrm{.}0625$ # Tax rate is $6\mathrm{.}25\%$

final$\_$cost $=$ total$\_$cost$\_$after$\_$discount $+$ tax

# Round the final cost to $2$ decimal places

final$\_$cost$\_$rounded $=$ round$($final$\_$cost$,2)$

return final$\_$cost$\_$rounded

# Example usage:

print$($cost$\_$calculator$($pizzas$=[[],["$ham$",$ "anchovy"$]],$ drinks$=["$tub$",$ "tub"$],$ wings$=[10,20],$ coupon$=10))$

print$($cost$\_$calculator$($drinks$=["$small$"]))$

print$($cost$\_$calculator$($pizzas$=[[],[],["$pepperoni$",$ "pepperoni"$]],$ wings$=[10,20],$ drinks$=["$small$"]))$

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