Thank you for installing DevBooster

    
        def get_numbers_from_user():
    """Get a list of numbers from the user with input validation."""
    numbers = []
    print("Enter numbers one by one (type 'done' to finish):")
    while True:
        user_input = input("Enter a number: ")
        if user_input.lower() == 'done':
            break
        try:
            number = float(user_input)
            numbers.append(number)
        except ValueError:
            print("Invalid input. Please enter a valid number.")
    return numbers