def get_input(input_string): 
    """Function that allows me to get the user input and force them to provide a number within the appropriate bounds. """
    response  = ""
    try:
        response = float(input(input_string)) # try to convert to float
    except:
        print("Please provide a valid input") # if it cant, then something must be wrong with the input. prompt the user to give me better input. 
        get_input(input_string)
    return response