#/bin/env python3
# _*_ utf-8 _*_List='''1. bike 800
2. cat 90000
3. book 100
'''
List_list=(("1","bike",800),("2","cat","90000"),("3","book","100"))
count = 0
sary=int(input("please input your sary:"))while True:print(List)
#    Input = int(input("please input(按q退出):"))Input = input("please input(按q退出):")
#    print(isinstance(Input,int))if Input == "1":count = count + 800elif Input == "2":count = count + 90000elif Input == "3":count = count + 100elif Input == "q":break;print("you buy things is",count)
if sary>=count:Yes=input("are you sure to buy?")while Yes == "y":sary=sary-countprint("now,your sary is",sary)break
else:print("your sary is too small")

#/bin/env python3
# _*_ utf-8 _*_
product_list=[('Mac',9000),('kindle',800),('tesla',900000),('python book',105),('bike',2000),]
saving=input('please input your money:')
shopping_car=[]
if saving.isdigit():saving=int(saving)while True:#打印商品内容for i,v in enumerate(product_list,1):           #enumerate 会把列表加上序号，默认从0开始；这里指定了从数字1开始print(i,'>>>>',v)#引导用户选择商品choice=input('选择购买商品编号[退出：q]：')#验证输入是否合法if choice.isdigit():choice=int(choice)if choice>0 and choice<=len(product_list):#将用户选择商品通过choice取出来p_item=product_list[choice-1]#如果钱够，用本金saving减去该商品价格，并将该商品加入购物车if p_item[1]

#/bin/env python3
# _*_ utf-8 _*_
# __author__=wjz
# 需要在当前目录下建立sary.txt文件，内容存储为字典格式，用户名和金额。例如 {'wjz':1000，'wjk':500}import timeshop_dict={'咖啡':22,'牛奶':5,'百岁山':4,'果珍':9,'甜点':15,'冰茶':11,'红茶':12}shop_list=list(shop_dict)
shop_list.sort()
shop_tuple=tuple(shop_list)f=open('sary.txt',"r",encoding="utf8")
sary_json=eval(f.read().strip())
f.close()
username=input("please input your name:")
sary=sary_json[username]
print("your sary is %d now." %sary)num=0
for i in shop_tuple:if num==0:print("shop is this:")num+=1print('---> ('+str(num)+')',i,shop_dict[i])shop_car=[]
while True:user_input=input("please input your select(q for exit):".strip())if user_input == 'q':breakelif not user_input.isnumeric():print("please input num")continueelif int(user_input) > len(shop_tuple) or int(user_input) <= 0 :print("please input right num")continueelse:user_input=int(user_input)select_shop=shop_tuple[user_input-1]if sary >= shop_dict[select_shop]:sary=sary - shop_dict[select_shop]shop_car.append(select_shop)print("%s has been in shopping car. sary is %d now." % (select_shop,sary))else:print("your money is not enough.")time.sleep(0.1)tuple_shop_car=tuple(shop_car)
set_shop_car=set(tuple_shop_car)
buyd=""
for i in set_shop_car:currut_row="%s: %d" %(i,tuple_shop_car.count(i))buyd=buyd+"\n"+currut_row
print('''your shop car is:\n----------%s\n----------''' %buyd)while True:sure_pay=input("Are you sure to pay?[y/n]")if sure_pay == "y":sary_json[username]=saryf=open('sary.txt','w')f.write(str(sary_json))f.close()print("your sary is %d now." %sary)breakelif sure_pay == "n":breakelse:print("please input your selection.")