实验3
实验任务1
import random print('用列表存储随机整数: ') ls = [random.randint(1, 100) for i in range(5)] print(ls) print('\n用集合存储随机整数: ') s1 = {random.randint(1,100) for i in range(5)} print(s1) print('\n用集合存储随机整数: ') s2 = set() while(len(s2)<5): s2.add(random.randint(1,100)) print(s2)
1、范围是1到100,可以取到100
2、0到5,不包括5;1到5,不包括5
3、是
4、是
实验任务2
datas = {'2049777001': ['篮球', '羽毛球', '美食', '漫画'], '2049777002': ['音乐', '旅行'], '2049777003': ['马拉松', '健身', '游戏'], '2049777004': [], '2049777005': ['足球', '阅读'], '2049777006': ['发呆', '闲逛'], '2049777007': [], '2049777008': ['书法', '电影'], '2049777009': ['音乐', '阅读', '电影', '漫画'], '2049777010': ['数学', '推理', '音乐', '旅行'] } v = {} for i in datas.values(): for j in i: v[j] = v.get(j, 0) + 1 x = list(v.keys()) y = list(v.values()) z = [(y[i], x[i]) for i in range(len(x))] for j in sorted(z, reverse=True): print(f"{j[1]}: {j[0]}")
实验任务3
import math temperatures = [['2022-04-18', '星期一', '10', '22'], ['2022-04-19', '星期二', '10', '22'], ['2022-04-20', '星期三', '12', '25'], ['2022-04-21', '星期四', '13', '28'], ['2022-04-22', '星期五', '16', '31'], ['2022-04-23', '星期六', '19', '31'], ['2022-04-24', '星期日', '19', '27']] min_tp = [] max_tp = [] for i in temperatures: min_tp.append(i[2]) max_tp.append(i[3]) min_tp.sort() max_tp.sort(reverse=True) print(f"未来一周最低温度:{min_tp[0]}℃\n未来一周最高温度:{max_tp[0]}℃") def aver(z): """计算平均值""" sum_ = 0 for q in z: sum_ += int(q) ave = sum_ / len(z) return ave print(f"未来一周平均气温区间:{math.floor(aver(min_tp))}~{math.floor(aver(max_tp))}")
实验任务4
from random import randint print("猜猜2022年5月哪一天会是你的lucky day:-") x = int(input("你有三次机会,猜吧(1~31): ")) y = randint(1, 31) for i in range(3): if x == y: print("哇,猜中了:-)") break elif x < y: print("猜早啦,你的lucky day还没到呢") else: print("猜晚啦,你的lucky day已经过啦") if i < 2: x = int(input("再猜(1~31): ")) else: print(f"次数用完啦。\n偷偷告诉你,5月你的lucky day是{y}号。good luck:-)")
实验任务5
x, n = eval(input("输入十进制整数和要转换的进制n(2或8或16): ")) y = [] hex_v = ["A", "B", "C", "D", "E", "F"] while x != 0: p = x % n if n == 16: if p > 9: gw = p%10 p = hex_v[gw] y.append(p) x = x // n y.reverse() z = "".join("%s" % i for i in y) print(z)
实验总结
1、方法join的特殊情况,当需要合并的字符不是字符串时,可以这样子"".join("%s" % i for i in list)
2、numpy库的mean函数我还是用不来,下次还是自己创建些模块吧
3、定义函数真的香,要多练练