A Python cmd console representing rolling of a dice

diceroll.py

import cmd
import random
import time

class DiceRoll(cmd.Cmd):
    """ A custom command prompt for a rolling dice """
    
    prompt = "dice>>> "

    def __init__(self):
        self.count = 0
        self.total = 0
        self.when = time.time()
        self.last = 0
        random.seed(self.when)
        super().__init__()
        
    def help_roll(self):
        """ Help for roll """
        print("Roll an unbiased dice and print the result")

    def help_stats(self):
        """ Help for stats """
        print("Print dice rolling stats")
        
    def do_roll(self, arg):
        """ Roll dice and print result """
        self.count += 1
        number = random.randrange(1, 7)
        self.total += number
        self.when = time.time()
        self.last = number
        print(number)

    def do_stats(self, arg):
        """ Print stats so far """
        print(f'Total rolls: {self.count}')
        if self.count > 0:
            last_roll = time.time() - self.when         
            avg = self.total/self.count
            print(f'Avg roll: {avg:.2f}')
            print(f'Last number: {self.last}')                        
            print(f'Last roll: {round(last_roll)} seconds back')

    def do_EOF(self, line):
        return True