+ def get(self):
+ if self.side == 0:
+ return (self.front, self.back)
+ else:
+ return (self.back, self.front)
+
+ def flip(self):
+ if self.side == 0:
+ self.side = 1
+ else:
+ self.side = 0
+
+ def get_reverse(self):
+ if self.side == 0:
+ return 1
+ else:
+ return 0
+