Python---购物车更新程序 商品信息存在文件当中，用户购买记录要打印已购商品，余额。卖家可以添加商品，修改价格。
分为两部分：1.用户入口
commoditydata={"Iphone7plus":5000,
"HuiWei10":4000,
"Apple iwatch":2500,
"Apple ipad":2000,
"Ruishi watch":3500,
"Ordinary world":78,
"The dynasty of one":45,
"milk tea":10,
"pizza":55,
"coffee":15,
}
user_shopcar={}
salary=input("Please input your salary:")
if salary.isdigit():
salary=int(salary)
print(type(salary))
while True:
print("-----The next time-----")
for i in commoditydata:
print(i,commoditydata[i])
user_choice=input("please choose what you buy:")
if user_choice in commoditydata:
print(commoditydata[user_choice])
if salary>=commoditydata[user_choice] :
user_shopcar[user_choice]=commoditydata[user_choice]
salary-=commoditydata[user_choice]
print("\033[41;1m[%s] goods is in your shopcar,your balance is [%s]\033[0m"%(user_choice,salary))
commoditydata.pop(user_choice)
g = open("com", "w", encoding="utf-8")
g.write(str(commoditydata))
g.close()
else:
print("sorry,your money is not enough")
elif user_choice=='E':
print("-----Shopcar-----")
for s in user_shopcar:
print(s,user_shopcar[s])
print("your balance is %s"%salary)
exit()
else:
print("sorry,what you want to buy is not exist")
2.卖家入口
commoditydata={"Iphone7plus":5000,
"HuiWei10":4000,
"Apple iwatch":2500,
"Apple ipad":2000,
"Ruishi watch":3500,
"Ordinary world":78,
"The dynasty of one":45,
"milk tea":10,
"pizza":55,
"coffee":15,
}
# user_shopcar={}
# salary=input("Please input your salary:")
# if salary.isdigit():
# salary=int(salary)
# print(type(salary))
# while True:
# print("-----The next time-----")
# for i in commoditydata:
# print(i,commoditydata[i])
# user_choice=input("please choose what you buy:")
#
# if user_choice in commoditydata:
# print(commoditydata[user_choice])
# if salary>=commoditydata[user_choice] :
# user_shopcar[user_choice]=commoditydata[user_choice]
# salary-=commoditydata[user_choice]
# print("\033[41;1m[%s] goods is in your shopcar,your balance is [%s]\033[0m"%(user_choice,salary))
# commoditydata.pop(user_choice)
# g = open("com", "w", encoding="utf-8")
# g.write(str(commoditydata))
# g.close()
# else:
# print("sorry,your money is not enough")
# elif user_choice=='E':
# print("-----Shopcar-----")
# for s in user_shopcar:
# print(s,user_shopcar[s])
# print("your balance is %s"%salary)
# exit()
# else:
# print("sorry,what you want to buy is not exist")
seller_name=["xiaohua","xiaoming","xiaoli","xiaowang"]
seller=input("please input your name:")
if seller in seller_name:
while True:
seller_choice=input("Are you add good or modify price?'a'represent add ,'m'represent modify price,'e'represent exit:" )
if seller_choice=='a':
print("please start add:")
add_good=input("input good you want to add:")
if add_good not in commoditydata:
add_goodprice=input("input good price:")
if add_goodprice.isdigit():
add_goodprice=int(add_goodprice)
commoditydata[add_good]=add_goodprice
f=open("sell","w",encoding="utf-8")
f.write(str(commoditydata))
f.close
print("you have add %s successfuly" % add_good)
else:
print("input wrong")
else:
print("sorry,what you add has existed")
elif seller_choice=='m':
print("please start modify:")
modify_good = input("input good you want to modify:")
if modify_good in commoditydata:
modify_goodprice = input("input good price:")
if modify_goodprice.isdigit():
modify_goodprice = int(modify_goodprice)
commoditydata[modify_good] = modify_goodprice
f = open("sell", "w", encoding="utf-8")
f.write(str(commoditydata))
f.close
print("you have modify %s successfuly"%modify_good)
else:
print("input wrong")
else:
print("sorry,what you modify is not exist")
elif seller_choice=="e":
exit()
else:
print("choice is wrong")
else:
print("sorry,you do not have authentication")
现在是单独的两个程序，可以将两个程序融合起来，用户走用户接口，卖家走卖家接口。