Please answer part 9.20, 9.21 and 9.22

Python 3.0 for language

Comment for each part of line of code explaining what is being done

9.20 Develop new widget Game that implements a number guessing game. When started, a secret random number between 0 and 9 is chosen. The user is then requested to enter guesses. Your GUI should have an Entry widget for the user to type the number guess and a Button widget to enter the guess