Help making PYTHON code more modular with function getAreaRecs$()$ which totals areas of windows and doors. Image helps.

My code:

import math

def calculate$\_$paint$\_$needed$($length$,$ width, height, doors, windows$)$:

total$\_$wall$\_$area $=2*($length $+$ width$)*$ height

total$\_$door$\_$area $=$ sum$($door$["$length$"]*$ door$["$width$"]$ for door in doors$)$

total$\_$window$\_$area $=$ sum$($window$["$length$"]*$ window$["$width$"]$ for window in windows$)$

total$\_$wall$\_$area $-=$ total$\_$door$\_$area $+$ total$\_$window$\_$area

gallons$\_$needed $=$ total$\_$wall$\_$area $/100\mathrm{.}0$

return gallons$\_$needed

def get$\_$valid$\_$input$($prompt$,$ validation$\_$func$)$:

while True:

try:

value $=$ input$($prompt$)$

value $=$ float$($value$)$

if validation$\_$func$($value$)$:

return value

else:

print$("$Invalid input. Please try again."$)$

except ValueError:

print$("$Invalid input. Please enter a valid number."$)$

def validate$\_$positive$($value$)$:

return value $>0$

def main$()$:

length $=$ get$\_$valid$\_$input$("$Enter the length of the room in feet: $",$ validate$\_$positive$)$

width $=$ get$\_$valid$\_$input$("$Enter the width of the room in feet: $",$ validate$\_$positive$)$

height $=$ get$\_$valid$\_$input$("$Enter the height of the room in feet: $",$ validate$\_$positive$)$

total$\_$wall$\_$area $=2*($length $+$ width$)*$ height

print$("$Total wall area before subtracting doors and windows:", total$\_$wall$\_$area$)$

print$("$Excellent$,$ let's get your windows and doors in now."$)$

num$\_$doors $=$ int$($get$\_$valid$\_$input$("$Enter the number of doors $($must be greater than $0)$: $",$ validate$\_$positive$))$

doors $=[\{"$length$"$: get$\_$valid$\_$input$($f$"$Enter the length of door $\{$i$+1\}$ in feet: $",$ validate$\_$positive$),$

"width": get$\_$valid$\_$input$($f$"$Enter the width of door $\{$i$+1\}$ in feet: $",$ validate$\_$positive$)\}$

for i in range$($num$\_$doors$)]$

num$\_$windows $=$ int$($get$\_$valid$\_$input$("$Enter the number of windows: $",$ validate$\_$positive$))$

windows $=[\{"$length$"$: get$\_$valid$\_$input$($f$"$Enter the length of window $\{$i$+1\}$ in feet: $",$ validate$\_$positive$),$

"width": get$\_$valid$\_$input$($f$"$Enter the width of window $\{$i$+1\}$ in feet: $",$ validate$\_$positive$)\}$

for i in range$($num$\_$windows$)]$

gallons$\_$needed $=$ calculate$\_$paint$\_$needed$($length$,$ width, height, doors, windows$)$

print$($f$"$You will need to buy $\{$math$.$ceil$($gallons$\_$needed$)\}$ gallons of paint."$)$

print$("$You will need exactly", gallons$\_$needed, "gallons of paint for the walls after subtracting the doors and windows."$)$

if $\_\_$name$\_\_=="\_\_$main$\_\_"$:

main$()$