丢个骰子

###Concepts:
* Build-in module.
* Practice on module, class, object, tuple.
###Codes: 
import random
class Dice:
    def roll(self):
        first = random.randint(1, 6)
        second = random.randint(1, 6)
        third = random.randint(1, 6)
        forth = random.randint(1, 6)
        fifth = random.randint(1, 6)
        return first, second, third, forth, fifth
dice = Dice()
print(dice.roll())