数据类型练习:
"""侧重于数据类型""" 01. 买苹果,计算金额并保留两位小数: price = int(input("苹果的单价：")) weight = float(input("苹果的重量：")) money = price * weight print("买了%d斤苹果, 每斤%.2f元, 需要付%.2f元" % (weight, price, money))02. 人机猜拳小游戏:
import randomdef finger_guessing():
while True: player = input("请输入您要出的拳 石头（1）/剪刀（2）/布（3）：") computer = random.choice('123') print("玩家出拳是：%s VS 电脑出的拳是：%s" % (player, computer)) # 比较胜负（玩家 VS 电脑） 1 石头胜剪刀 2 剪刀胜布 3 布胜剪刀 # 满足其中一项胜利规则，玩家胜利 if ((player == '1' and computer == '2') or (player == '2' and computer == '3') or (player == '3' and computer == '1')): print("玩家player胜利") # 玩家出拳和电脑一样，平局 else: if player == computer: print("双方平局！") # 玩家出拳和电脑不一样，电脑胜利 else: print("电脑computer胜利") finger_guessing()03. 一行代码实现人工智能:
while True: print(input('问:').strip('吗?？') + '!')04. 写一个程序, 对输入的内容做加法识别并计算:
content = input("请输入加法运算式:") a_list = content.partition("+") a_int = int(a_list[0]) + int(a_list[2]) print("%s + %s = %s" % (a_list[0], a_list[2], a_int)) 05. 写一个程序, 对输入的字符串统计字母和数字出现的次数: xs_int = 0 zm_int = 0 zf_str = input(">>>") for i_int in zf_str: if i_int.isalpha()==True: zm_int += 1 elif i_int.isdecimal()==True: xs_int += 1 print(zm_int, xs_int) 06. 随机生成验证码: def check_code(num=4): """随机生成验证码""" import random checkcode = "" for i in range(num): current = random.randrange(0, num) if current != i: temp = chr(random.randint(65, 90)) else: temp = random.randint(0, 9) checkcode += str(temp) return checkcode cdoe = check_code(6) print(cdoe) 07. 循环输入字符串,q退出输入, 格式化表格形式输出添加的元素: ''' fgadfgdas dsfcvar dasfsa dasfdsaew dfsd hggfhty fgd gfdgvb hhbdfsfafadfafd dfd cdsafewaf da dafw dsfaf dadfq ''' s1 = "" while True: v1 = input("v1>>>") v2 = input("v2>>>") v3 = input("v3>>>") if v1=="q" or v2=="q" or v3=="q": break v4 = "{0}\t{1}\t{2}\n".format(v1, v2, v3) s1 = s1 + v4 print(s1.expandtabs(20)) # 指定以几个字符以断句，遇到制表符用空格补全几个字符 08. 输入一个字符串, 判断输入的字符串是否是整数或小数: s = input(">>>") s1 = s.replace("-", "") # 替换掉负号 if s1.isdigit(): print("字符串%s是整数" % s) else: if s1.count(".")==1 and not s1.startswith(".") and not s1.endswith("."): print("字符串%s是小数" % s) else: print("字符串%s是不是小数" % s) 09. 校验⽤用户输⼊入的验证码是否合法, 并忽略首尾空格 verify_code = "Coco" user_verify_code = input("请输入验证码:") if verify_code.upper() == user_verify_code.upper().strip(): print("验证成功") else: print("验证失败") 10. 公鸡5文钱一只, 母鸡3文钱一只, 小鸡3只1文钱, 用100文钱买100只鸡,必须要有公鸡母鸡小鸡, 公鸡母鸡小鸡各多少只: s1_int = range(1, 21) # 100文钱可以买20只公鸡 s2_int = range(1, 34) # 100文钱可以买33只母鸡 s3_int = range(1, 301) # 100文钱可以买300只小鸡 for i in s1_int: for j in s2_int: for v in s3_int: if i + j + v == 100 and 5 * i + 3 * j + v / 3 == 100: print("公鸡%s只,母鸡%s只,小鸡%s只" % (i, j, v))11. 从列表中找到人名coco:
li = ["Tom ", "ale xC", "AbC ", "\rCoco\r\n", " ri TiAn", "Coc", " aqc", "coco\t"] lst = [] for el in li: el = el.replace(" ", "").strip() if (el.startswith("C") or el.startswith("c")) and el.endswith("o"): lst.append(el) print(lst) 12. 打码评论中的敏感词汇: lst = [] li = ["苍老师", "东京热", "武藤兰", "波多野结衣"] content = input("请输入你的评论:") for el in li: if el in content: content = content.replace(el, "*" * len(el)) lst.append(content) print(lst)13. 遍历嵌套列表:
li = [1, 3, 4, "coco", [3, 7, 8, "Angles"], 5, "Cat"] for e in li: if type(e) == list: # 判断e的数据类型 for ee in e: if type(ee) == str: print(ee.lower()) else: print(ee) else: if type(e) == str: print(e.lower()) else: print(e) 14. 把学生成绩录入到一个列表中, 并求平均值, 要求录入的时候要带着学生姓名和成绩例如, 张三_44: lst = [] while 1: stu = input("请输入学生的姓名和成绩(姓名_成绩), 输入Q退出录入:") if stu.upper() == "Q": break lst.append(stu) # 求平均值 sum = 0 for el in lst: li = el.split("_") sum += int(li[1]) print(sum / len(lst)) 15. 有如下值li= [11,22,33,44,55,66,77,88,99,90], 完善字典{'k1': 大于66的所有值列表, 'k2': 小于66的所有值列表}: li= [11,22,33,44,55,66,77,88,99,90] dic = {} for el in li: if el > 66: dic.setdefault("k1", []).append(el) # 1. 新增, 2. 查询 else: dic.setdefault("k2", []).append(el) # 1. 新增, 2. 查询 print(dic) 16. 购物, 列表套字典实现: goods = [ {"name": "电脑", "price": 1999}, {"name": "鼠标", "price": 10}, {"name": "游艇", "price": 20}, {"name": "手机", "price": 998} ]for i in range(len(goods)):
good = goods[i] print(i+1, good['name'], good['price'])while 1:
content = input("请输入你要买的商品:") if content.upper() == "Q": break index = int(content) - 1 # 索引 if index > len(goods) - 1 or index < 0: # 调试 print("输入有误. 请重新输入:") continue print(goods[index]['name'], goods[index]['price']) 17. 用户输入页码翻页输出列表: li_list = [] for i in range(1, 301): item = {"k" + str(i):"value" + str(i)} li_list.append(item) # print(li_list) while True: s1 = input("请输入页码1-30:") if s1.isdigit(): s1 = int(s1) for i in li_list[(s1 - 1) * 10:s1 * 10]: print(i) else: print("不能输入1-300的其他内容") 18. 字典的嵌套运用: db_dict = {} path_list = [] while True: temp_dict = db_dict for item in path_list: temp_dict = temp_dict[item] print("当节点的所有子节点:", list(temp_dict.keys()))choice = input("1:添加节点;2:查看节点(q退出/b返回上一级)\n>>>")
if choice == "1": name = input("请输入要添加节点名称:") if name in temp_dict: print("节点已存在") else: temp_dict[name] = {} elif choice == "2": name = input("请输入要查看节点名称:") if name in temp_dict: path_list.append(name) else: print("你输入的节点名称不正确") elif choice.lower() == "b": if path_list: path_list.pop() elif choice.lower() == "q": break else: print("你输入的不正确。。。") 19. 实现一个整数加法计算器, 如用户输入：5+8+7....(最少 输入两个数相加)将最后的计算结果添加到此字典中(替换None): dic={'最终计算结果':None} content = input('请输入内容:').strip() # 5+8+7 lst = content.split("+") sum = 0 for el in lst: sum = sum + int(el.strip()) dic['最终计算结果'] = sum print(dic) 20. 已知列表li = [11,22,33,44,55,77,88,99,90], 组合成字典{'k1': 小于66值, 'k2': 大于66值}: li = [11,22,33,44,55,77,88,99,90] result = {} for row in li: if row < 66: l = result.get("k1") # 上来就拿k1 if l == None: # k1不存在. 没有这个列表 result["k1"] = [row] # 创建一个列表扔进去 else: # k1如果存在 result['k1'].append(row) # 追加内容 else: l = result.get("k2") # 上来就拿k2 if l == None: # k1不存在. 没有这个列表 result["k2"] = [row] # 创建一个列表扔进去 else: # k1如果存在 result['k2'].append(row) # 追加内容 print(result) # {'k1': [11, 22, 33, 44, 55], 'k2': [77, 88, 99, 90]} 21. 数据处理,将列表转字典,去重: user_list=[ {"name": "coco", "hobby": "动漫"}, {"name": "coco", "hobby": "音乐"}, {"name": "coco", "hobby": "学习"}, {"name": "angels", "hobby": "看书"}, {"name": "angels", "hobby": "游戏"}, ] def hobby(name): hobby_set = set() for i_dic in user_list: if i_dic["name"] == name: hobby_set.add(i_dic["hobby"]) return hobby_set def main(user_list): name_set = set() user_dic = dict() for i in user_list: name_set.add(i["name"]) print(name_set) # {'coco', 'angels'} for name in name_set: user_dic[name] = hobby(name)print(user_dic) # {'coco': {'音乐', '学习', '动漫'}, 'angels': {'游戏', '看书'}}
main(user_list)