def get_players(string):
    """
    Parses a string representing the number of other players (i.e. excluding
    the player) in the round. Currently supports only 1-9 other players.
    Returns a string in the correct form for the lookup table.
    Returns None if the input could not be parsed.
    """
    if "nine" in string or string=="9":
        return 9
    if "eight" in string or string=="8":
        return 8
    if "seven" in string or string=="7":
        return 7
    if "six" in string or string=="6":
        return 6
    if "five" in string or string=="5":
        return 5
    if "four" in string or string=="4":
        return 4
    if "three" in string or string=="3":
        return 3
    if "two" in string or string=="2":
        return 2
    if "one" in string or string=="1":
        return 1

    return None