class Token:
    def __init__(self, value, type):
        self.value = value
        self.type = type

class TokenType:
    add = 0
    subtract = 1
    multiply = 2
    divide = 3
    power = 4
    variable = 5
    constant = 6
    exp_start = 7
    exp_end = 8
    unknown = 9

    OPERATOR_VERBS = {
        0 : "Adding",
        1 : "Subtracting",
        2 : "Multiplying",
        3 : "Dividing",
        4 : "Raising"
    }

    OPERATORS = {
        '+' : add,
        '-' : subtract,
        '*' : multiply,
        '^' : power,
        '/' : divide
    }

    def get_operator_verb(self, token):
        if not token in self.OPERATOR_VERBS:
            raise ValueError("An operator verb could not be found.", "token")
        return self.OPERATOR_VERBS[token]

    def get_operator(self, character):
        if not character in self.OPERATORS:
            raise ValueError(f"Invalid operator '{character}' could not be found in the operators list.", "character")
        return self.OPERATORS[character]

#t = TokenType()
#t1 = Token("$", TokenType.Unknown)
#print(t.GetOperator(t1.value))