tip3

# tip checking loop
while True:
    # tip value question - not defined as integer to be able to get empty value
    answer = input("Give me the tip quantinty which you gave to Johnnemy 'hundred' Collins: ")
    # check if the answer is a number
    try:
        number = int(answer) # int('') will also raise ValueError
    except ValueError:
        print('Please enter a number')
        # there is no break here, so we will loop
    else: # if the answer is a number - check how much it is
        if number<0:
            print("You're kidding me. Please enter a positive number")
            # again, no break -- so loop
        elif number==0:
            print('ZERO?')
            break
        elif number < 100:
            print('Johnny says: Next time I spit in your soup')
            break
        elif number >= 100:
            print('Johnny says: SUPER!')
            break

print('This is the end of this conversation')