一个简单的购物车代码
li = [
{'name':'1h1g','price':10},
{'name':'1h2g','price':20},
{'name':'2h4g','price':30}
]
for i in li:
print('No.{}\t商品：{}\t价格：{}'.format(li.index(i)+1,i['name'],i['price']))
shopping_car = {}
while 1:
money = input('请输入你的钱：')
if money.isdigit() and int(money) > 0:
money = int(money)
else:
print("输入错误！")
continue
while 1:
selection = input('请输入你要买的商品序号：')
if selection.isdigit() and int(selection) < len(li) + 1 and int(selection) > 0:
num = input('请输入你要购买的个数：')
if num.isdigit() and int(num) > 0:
if money - li[int(selection) - 1]['price'] * int(num) >= 0:
money = money - li[int(selection) - 1]['price'] * int(num)
print('你已在购物车里添加{}件{}号商品'.format(num,selection))
shopping_car.setdefault(li[int(selection) - 1]['name'])
if shopping_car[li[int(selection) - 1]['name']] == None:
shopping_car[li[int(selection) - 1]['name']] = 0
shopping_car[li[int(selection) - 1]['name']] = shopping_car[li[int(selection) - 1]['name']] +int(num)
print('购物车已有{},您的余额还剩{}'.format(shopping_car,money))
else:
print("回家找你老婆要钱去！")
break
else:
print("输入数字啊！")
elif selection.upper() == 'Q':
print("退出成功")
break
else:
print("请输入正确的数据类型")
print('购物车已有{}'.format(shopping_car))
break
编码转换
s = 'China中国'
s1 = s.encode('utf-8')
s2 = s.encode('gbk')
print(s,s1,s2)
# China中国 b'China\xe4\xb8\xad\xe5\x9b\xbd' b'China\xd6\xd0\xb9\xfa'
