1,购物车
功能要求： 要求用户输入自己拥有总资产，例如：2000 显示商品列表，让用户根据序号选择商品，加入购物车 购买，如果商品总额大于总资产，提示账户余额不足，否则，购买成功。 goods = [ {"name": "电脑", "price": 1999}, {"name": "鼠标", "price": 10}, {"name": "游艇", "price": 20}, {"name": "美女", "price": 998}, ] 
goods = [ { "name": "电脑", "price": 1999}, { "name": "鼠标", "price": 10}, { "name": "游艇", "price": 20}, { "name": "美女", "price": 998},]user_money = input("请输入您的资产>>")user_money = int(user_money)for item in goods: print(goods.index(item) + 1, item['name'], item['price'])car = []sum = 0while 1: user_section = input("请输入您的选择的商品序号>>") if user_section.upper() == 'Q': if len(car) != 0: print("恭喜您购买成功,您一共消费%s元" % sum) break if user_section.isdigit() and int(user_money) >= 0 and int(user_section) <= len(goods): if user_money < sum: print('商品价格为%s元,您的余额不足' % sum) break user_section = int(user_section) - 1 car.append(goods[user_section]['name']) sum += goods[user_section]['price'] else: print("非法输入") 2,计算BIM
# 1.创建并输出菜单, 菜单是不可变的. 所以使用元组 # 存储用户的信息 id: {'name':'名字', 'weight':体重, 'height':身高} # 例如：目前有两个用户信息：1. 汪峰， 2. 章子怡 # 存储结构： # { # 1:{'name':'汪峰', 'weight':80, 'height':1.8, 'BMI':24.7}, # 2:{'name':'章子怡', 'weight':50, 'height':1.65, 'BMI':18.4} # } # 编号从1开始 # 体质指数（BMI）= 体重（kg）÷ (身高(m) x 身高(m)) # 体重的单位: KG # 身高的单位: m # 需求：首先。打印菜单，然后用户输入选择的菜单项 # 输入1：进入录入环节。用户需要录入：名字,身高,体重. while # 由程序计算出BMI指数. 保存到bodies字典中. 第一个用户的id是1, 第二个是2, 以此类推 # 录入完毕后. 提示用户是否继续录入. 如果选择是, 则继续进行录入, 直到用户输入否. 则返回到主菜单 # 输入2: 进入查询环节, 提示用户输入要查询的人的id. 如果不存在,给与提示, 如果存在. 则显示出该用户的全部信息(名字,身高,体重,BMI) # 然后提示用户是否继续查询. 如果选择是, 继续进行查询, 直到用户输入否, 返回主菜单 # 输入3: 进入删除环节, 提示用户输入要删除的人的id, 如果id不存在, 给与提示, 如果存在, 则执行删除操作. 并提示删除成功. # 然后提示用户是否继续删除, 如果是, 继续让用户选择要删除的id, 直到用户输入否, 返回主菜单 # 输入4: 进入修改环节, 首先让用户输入要修改的人的id, 根据id查找用户信息, 如果不存在, 给与提示, 如果存在, 将用户原信息进行打印, # 然后提示用户输入新的名字, 身高, 体重. 由程序重新计算BMI指数. 并将新的信息保存在bodies中. 同时给用户展示新的用户信息 # 然后提示用户是否继续修改, 如果是, 则继续要求用户输入id信息. 直到用户输入否, 返回主菜单. # 输入5: 程序退出. # 输入其他任何内容. 都予以提示不合法. 让用户重新进行输入 menus = ("1, 录入", "2, 查询", "3, 删除", "4, 修改", "5, 退出")for item in menus: print(item)bodies = {}body_id = 1flag = Falsewhile 1: while flag: user_section_a = input('是/否') if user_section_a == '是': dic = { "name": None, "weight": None, "height": None, "BMI": None} user_input_name = input('请输入您的名字>>') while 1: user_input_high = input('请输入您的身高>>') if not user_input_high.isdigit(): print('请输入正确的身高') else: break user_input_high = int(user_input_high) while 1: user_input_weight = input('请输入您的体重>>') if not user_input_weight.isdigit(): print("请输入正确的体重") else: break user_input_weight = int(user_input_weight) BMI = user_input_weight / (user_input_high ** 2) dic['name'] = user_input_name dic['height'] = user_input_high dic['weight'] = user_input_weight dic['BMI'] = BMI bodies[body_id] = dic body_id += 1 elif user_section_a == '否': print(bodies) flag = False else: print("请按照规定输入") user_section = input('please enter your section :') if user_section == '5': break if user_section == '1': flag = True dic = { "name": None, "weight": None, "height": None, "BMI": None} user_input_name = input('请输入您的名字>>') while 1: user_input_high = input('请输入您的身高>>') if not user_input_high.isdigit(): print('请输入正确的身高') else: break user_input_high = int(user_input_high) while 1: user_input_weight = input('请输入您的体重>>') if not user_input_weight.isdigit(): print("请输入正确的体重") else: break user_input_weight = int(user_input_weight) BMI = user_input_weight / (user_input_high ** 2) dic['name'] = user_input_name dic['height'] = user_input_high dic['weight'] = user_input_weight dic['BMI'] = BMI bodies[body_id] = dic body_id += 1 elif user_section == '2': while 1: user_cha = input('please enter your look id>>') if not user_cha.isdigit(): print('输入错误,请重新输入') else: break flag1 = True if int(user_cha) in bodies: print(bodies[int(user_cha)]) else: print('NO the info') while flag1: user_section_b = input('是/否') if user_section_b == '是': user_cha = input('please enter your look id>>') if int(user_cha) in bodies: print(bodies[int(user_cha)]) else: print('NO the info') elif user_section_b == '否': break else: print("请按照规定输入") elif user_section == '3': for item in bodies: print(item, bodies[item]) while 1: user_shan = input('please enter your pop id') if not user_shan.isdigit(): print("非法输入,请重新输入") else: break user_shan = int(user_shan) # bodies.pop(user_shan) if user_shan in bodies: bodies.pop(user_shan) body_id -= 1 for key, value in bodies.items(): if user_shan < key: a, b = key - 1, value del bodies[key] bodies[a] = b else: pass else: print("NO the id info") while 1: user_section_shan = input("是/否") if user_section_shan == "是": for item in bodies: print(item, bodies[item]) user_shan = input('please enter your pop id') user_shan = int(user_shan) if user_shan in bodies: bodies.pop(user_shan) body_id -= 1 for key, value in bodies.items(): if user_shan < key: a,b = key -1 , value del bodies[key] bodies[a] = b else: pass else: print('NO the id info') elif user_section_shan == '否': break else: print("请按照规定输入") elif user_section == '4': for item in bodies: print(item, bodies[item]) while 1: user_section_gai = input('please enter you change id>>') if not user_section_gai.isdigit(): print("非法输入,请重新输入") else: break user_section_gai = int(user_section_gai) if user_section_gai in bodies: print('您要求改的内容为%s' % bodies[user_section_gai]) print('请输入修改之后的信息') gai_name = input("Name:") while 1: gai_high = input("High:") if not gai_high.isdigit(): print('非法输入,请重新输入') else: break gai_high = int(gai_high) while 1: gai_weight = input("weight:") if not gai_weight.isdigit(): print("非法输入,请重新输入") else: break gai_weight = int(gai_weight) gai_BMI = gai_weight/(gai_high**2) bodies[user_section_gai] = { 'name': gai_name, 'weight': gai_weight, 'high': gai_high, 'BMI': gai_BMI} else: print("NO the id info") while 1: user_section_gai_a = input('是/否') if user_section_gai_a == '是': while 1 : user_section_gai = input('please enter you change id>>') if not user_section_gai.isdigit(): print('非法输入,请重新输入') else: break user_section_gai = int(user_section_gai) if user_section_gai in bodies: print('您要求改的内容为%s' % bodies[user_section_gai]) print('请输入修改之后的信息') gai_name = input("Name:") while 1: gai_high = input("High:") if not gai_high.isdigit(): print("非法输入,请重新输入") else: break gai_high = int(gai_high) while 1: gai_weight = input("weight:") if not gai_weight.isdigit(): print("非法输入,请重新输入") else: break gai_weight = int(gai_weight) gai_BMI = gai_weight / (gai_high ** 2) bodies[user_section_gai] = { 'name': gai_name, 'weight': gai_weight, 'high': gai_high, 'BMI': gai_BMI} else: print("NO the id info") elif user_section_gai_a == '否': break else: print('请按照规定输入') else: print('输入错误') 这个是修改版本,上面那个有瑕疵
menus = ("1, 录入", "2, 查询", "3, 删除", "4, 修改", "5, 退出")bodies = {}body_id = 1while 1: for item in menus: print(item) user_section = input('please enter your section :') if user_section == '1': flag = True while flag: dic = { "name": None, "weight": None, "height": None, "BMI": None} user_input_name = input('请输入您的名字>>') while 1: user_input_high = input('请输入您的身高>>') if not user_input_high.startswith(".") and not user_input_high.endswith(".") and user_input_high.count(".") == 1: break else: print("请输入正确的格式") user_input_high = float(user_input_high) while 1: user_input_weight = input('请输入您的体重>>') if not user_input_weight.startswith(".") and not user_input_weight.endswith( ".") and user_input_weight.count(".") == 1 or user_input_weight.isdigit(): break else: print("请输入正确的格式") user_input_weight = float(user_input_weight) BMI = user_input_weight / (user_input_high ** 2) dic['name'] = user_input_name dic['height'] = user_input_high dic['weight'] = user_input_weight dic['BMI'] = BMI bodies[body_id] = dic body_id += 1 while 1: user_section_a = input('是/否') if user_section_a == '是': break elif user_section_a == '否': print(bodies) flag = False break else: print("请按照规定输入") elif user_section == '2': flag2 = True while flag2: user_cha = input('please enter your look id>>') if not user_cha.isdigit(): print('输入错误,请重新输入') else: if int(user_cha) in bodies: print(bodies[int(user_cha)]) else: print('NO the info') while 1: user_section_b = input('是/否') if user_section_b == '是': break elif user_section_b == '否': flag2 = False break else: print("请按照规定输入") elif user_section == '3': flag3 = True while flag3: while 1: user_shan = input('please enter your pop id') if not user_shan.isdigit(): print("非法输入,请重新输入") else: break user_shan = int(user_shan) if user_shan in bodies: bodies.pop(user_shan) body_id -= 1 for key, value in bodies.items(): if user_shan < key: a, b = key - 1, value del bodies[key] bodies[a] = b else: pass else: print("NO the id info") user_section_b = input('是/否') if user_section_b == '是': break elif user_section_b == '否': flag3 = False break else: print("请按照规定输入") elif user_section == '4': flag4 = True while flag4: while 1: user_section_gai = input('please enter you change id>>') if not user_section_gai.isdigit(): print("非法输入,请重新输入") else: break user_section_gai = int(user_section_gai) if user_section_gai in bodies: print('您要求改的内容为%s' % bodies[user_section_gai]) print('请输入修改之后的信息') gai_name = input("Name:") while 1: gai_high = input("High:") if not gai_high.startswith(".") and not gai_high.endswith(".") and gai_high.count(".") == 1: break else: print("输入非法") gai_high = float(gai_high) while 1: gai_weight = input("weight:") if not gai_weight.startswith(".") and not gai_weight.endswith(".") and gai_weight.count(".") == 1 or gai_weight.isdigit(): break else: print("非法输入") gai_weight = float(gai_weight) gai_BMI = gai_weight / (gai_high ** 2) bodies[user_section_gai] = { 'name': gai_name, 'weight': gai_weight, 'high': gai_high, 'BMI': gai_BMI} else: print("NO the id info") while 1: user_section_b = input('是/否') if user_section_b == '是': break elif user_section_b == '否': flag4 = False break else: print("请按照规定输入") elif user_section == '5': break else: print('非法输入')