#!/usr/bin/python3
# -*- coding:utf-8 -*-
"""
@author:Strom_duck
@file :20200622_01.py
@time :2020/6/22 13:47
"""
"""
随机产生20个两位的正整数存入列表ls中,返回列表中低于平均值的数有多少
"""
if __name__ == "__main__":
from random import randint as rd
olist = []
for i in range(20):
olist.append(rd(10, 99))
avg = sum(olist) / 20
result_list = [t for t in olist if t < avg]
print("小于平均值的数有{}个".format(len(result_list)))
print("小于平均数的是:{}".format(result_list))