'Initialize dice pouch and roll the dice.
Args:
num_of_die: number of dice in the pouch.
type_of_die: how many faces the dice have.
addition: how much is added to the result of the dice.'

def __init__(self, num_of_die, type_of_die, addition):

    self.num = num_of_die
    self.type = type_of_die
    self.addition = addition
    self.dice = {}
    self.dropped = {}
    self.roll_dice()
