#随机#：python、redis等

random模块

random.shuffle(你的列表)——有打乱列表内元素排列顺序，就地打乱返回None
random.sample(list, 8)从list中随机取8个
random.randint(self, a, b) Return random integer in range [a, b], including both end points.
random.choice(self, seq) Choose a random element from a non-empty sequence.

抽奖概率解决方案

各种相关信息可以记在数据库或配置变量或配置表

    RATE = [25, 15, 9, 8, 3, 25, 5, 10]    def get_draw_index(cls, rate):        import random        """随机变量的概率函数"""        start = 0        randnum = random.randint(1, sum(rate))        for index, item in enumerate(rate):            start += item            if randnum <= start:                break        return index

保证返回的三个完全不一样，这个方案感觉很low    def get_fail_random_data(cls, draw_obs):        import random        draw_obs.pop()                              # 这里要求未中奖必须在列表的最后        _random_obs = random.sample(draw_obs, 2)        _random_obs.append(random.choice(draw_obs))        _random_data = []        for _random_ob in _random_obs:            d = dict(kind=_random_ob.kind, num=_random_ob.kind)            _random_data.append(d)        return _random_data

redis自带随机