Write a program that prompts the user to enter a length in feet and inches and outputs the equivalent length in centimeters. If the user enters a negative number or a nondigit member, throw and handle...

Write a program that prompts the user to enter a length in feet and inches and outputs the equivalent length in centimeters. If the user enters a negative number or a nondigit member, throw and handle an appropriate exception and prompt the user to enter another set of numbers.
The languageto be used is Python and please provide a screen shot of the program with a successful run