error message with module

[Yoriz]

if val == 'unrolled': val = -1 # no code after the :

there shouldn't be any code after the :
val = -1 should be moved to the next line
Use 4 spaces for indents.

if val == 'unrolled':
    val = -1
    if (val >= 1 and val <= self.sides) or val == -1:
        self._value = va # should this be va or val?

player1 = player1dice player2 = player2dice

Do these assignments on separate lines

player1 = player1dice
player2 = player2dice