$7\mathrm{.}3\mathrm{.}2$: Raising exceptions. Integers total$\_$grapes and grapes$\_$requested are read from input, representing the number of grapes available and the number of grapes a customer wants to buy. In the try block:

Raise a ValueError exception with the message 'Number of grapes available must be positive' if total$\_$grapes is less than or equal to $0.$

Raise a ValueError exception with the message 'Number of grapes requested must be within range' if grapes$\_$requested is less than $0$ or is greater than total$\_$grapes.

try:

total$\_$grapes $=$ int$($input$())$

grapes$\_$requested $=$ int$($input$())$

# Your code goes here

grapes$\_$remaining $=$ total$\_$grapes $-$ grapes$\_$requested

print$($f$\text{'}$Grapes remaining: $\{$grapes$\_$remaining$\}\text{'})$

except ValueError as excpt:

print$($f$\text{'}$Error: $\{$excpt$\}\text{'})$