Realization of additions and deletions Cart:
# Goods name goods --- price
list_goods = [
{ 'name': 'apple', '. Price':} 9.9,
{ 'name': 'banana', '. Price': 2.23},
{ 'name': 'orange ','. price ':} 3.2,
{' name ':' melon ','. price ':. 5},
{' name ':' watermelon ','. price ':} 2.2,
{' name ':' dragon ' , '. price':. 6},
{ 'name': 'plum', '. price':. 3},
];
user_list_goods = [
]
user_dic_goods = {
}
all_price = 0
Print ( "! Welcome")
Money = INPUT ( " payment >>> ") Strip ().
end_choose_flag = False
IF money.isdigit () and int (Money)> 0:
money_int = int(money)
while not end_choose_flag:
for i,good in enumerate(list_goods) :
print("序号{} 商品：{} 价格{}".format(i,good['name'],good['price']))
good_series_num = INPUT ( 'Enter the product number you want to exit the press >>> Q ')
IF good_series_num.upper () ==' Q ':
BREAK
elif good_series_num.isdigit () and int (good_series_num) in the Range (0, len (list_goods)):
good_num the iNPUT = (' Please input number of items (to delete / empty, enter the number corresponding to the commodity negative) >>> ')
. price list_goods = [int (good_series_num)] ['. price '] * int (good_num)
current_good_msg = {
' name ': list_goods [ int (good_series_num)] [ 'name'],
'MSG': { 'NUM': int (good_num), '. price':}. price
}
IF. price> = money_int - all_price: # insufficient balances
while 1:
if choose.upper() == 'Y':
add_money = input("充值金额>>>")
if add_money.isdigit() and int(add_money) > 0:
money_int += int(add_money)
print('money int {}, price :{}'.format(money_int,price))
if price > money_int - all_price :
continue
else:
all_price += price
if current_good_msg['name'] in user_dic_goods:
user_dic_goods[current_good_msg['name']]['num'] += int(
good_num) # {'name':{'num','all_price'}}
user_dic_goods [current_good_msg [ 'name']] [ '. price'] + =. price
the else:
user_dic_goods.setdefault (current_good_msg [ 'name'], current_good_msg [ 'MSG'])
Print (user_dic_goods)
BREAK
elif choose.upper () == 'N':
end = input("是否前去结算？Y/N")
if end.upper() == 'Y':
end_choose_flag = True
BREAK
elif end.upper () == 'N':
Print ( "! insufficient funds, can not continue, please recharge")
the else:
Print ( "You make a mistake!")
the else:
if int(good_num)>0:
all_price += price
if current_good_msg['name'] in user_dic_goods:
user_dic_goods[current_good_msg['name']]['num'] += int(good_num) #{'name':{'num','all_price'}}
user_dic_goods[current_good_msg['name']]['price'] += price
else:
user_dic_goods.setdefault(current_good_msg['name'],current_good_msg['msg'])current_good_msg['msg'])
print(user_dic_goods)
print("当前购物车总值{},余额 {}".format(all_price,money_int - all_price))
else:#删除
if current_good_msg['name'] in user_dic_goods:
check_del = input ( "Delete? corresponds to the number of goods? Y / N")
if check_del.upper() == 'Y':
if int(good_num) < user_dic_goods[current_good_msg['name']]['num']:
user_dic_goods[current_good_msg['name']]['num'] += int(good_num) #{'name':{'num','all_price'}}
user_dic_goods[current_good_msg['name']]['price'] += price
else:
check_clear = input("是否清空对应商品?Y/N")
if check_clear.upper() == 'Y':
temp = user_dic_goods.pop(user_dic_goods[current_good_msg['name']])
Print ( "gross current shopping cart {}, the balance of {}" format (all_price, money_int
Print (user_dic_goods)
the else:
Print ( " the number you entered is incorrect, please re-enter ")
the Continue
Print (user_dic_goods)
Print (" gross current shopping cart {}, the balance of {} "format (all_price, money_int -. all_price))
# user_list_goods.append (current_good_msg)
the else :
print ( "input is incorrect, please re-enter!")
# settlement
print ( "current inventory:")
for k,v in user_dic_goods.items():
print ( "{} {} total number of {}" the format (K, V [ 'NUM'], V [ '. price']).)
Print (. "Total: {}, find I {}" format (all_price , money_int - all_price))
the else:
Print ( "Please give legal bill payment")