IN python Write a program using while loop with validation where user input wholesale prices to calculate retail prices. The markup is $2\mathrm{.}5$ times. Validation is to check if a value is out of range and display a message to let the user know that the value entered is an error. In this case the wholesale value cannot be less than zero. Also No lists, functions, dictionary. You are not allowed to use break or continue.

also the format is like this

#input

#calc

#output

Sample Run $1$

Enter the item$$s wholesale cost: $-\mathrm{.}50$

ERROR: the cost cannot be negative

Enter the correct wholesale cost: $\mathrm{.}50$ Retail price is $$1\mathrm{.}25$

Do you have another item? $($Enter y for yes$)$: n