用python编写函数实现：随机产生30个0-19之间的随机整数(利用random函数库生成)并存入列表中，计算列表中数值的平均值并输出众数的个数。

import random
from collections import Counter

def random_list():
    nums = [random.randint(0, 19) for _ in range(30)]
    return nums

def average(nums):
    return sum(nums) / len(nums)

def mode_count(nums):
    counter = Counter(nums)
    mode = counter.most_common(1)[0][1]
    mode_count = len([count for count in counter.values() if count == mode])
    return mode_count

nums = random_list()
print(nums)
print("平均值：", average(nums))
print("众数的个数：", mode_count(nums))