Python第二次写的代码

#!/bin/bash/env python
# -*- coding:utf-8 -*-
#function:将大于66值保存在第一个字典键中，小于66保存在第二个

i1 = [11,22,33,44,55,66,77,88,99,90]
dict = {
    ‘k1‘: [],
    ‘k2‘: [],
}
for i in i1:
    if i <= 66:
        dict[‘k1‘].append(i)
    else:
        dict[‘k2‘].append(i)
print(dict)

结果：{‘k1‘: [11, 22, 33, 44, 55, 66], ‘k2‘: [77, 88, 99, 90]}

注意.append的用法，就是将i值添加到k1键中。还有数字不用‘‘号。并且注意字典的格式，每次定义键的时候都需要加上,号。

#!/bin/bash/env python
# -*- coding:utf-8 -*-
#function:输出商品列表，用户输入序号，显示用户选中商品

i1 = [‘shouji‘,‘diannao‘,‘shubiao‘,‘youting‘]
for key,item in enumerate(i1):
    print(key,item)
inp = input("Please enter market number:")
inp_number = int(inp)
print(i1[inp_number])

#!/bin/bash/env python
# -*- coding:utf-8 -*-
#function:简单的购物车

inp1 = input("请输入您的总资产：")
inp1_number = int(inp1)
print(‘You have‘,inp1_number,‘dollars‘)
goods = [
    {"name": "dianano","price": 1999},
    {"name": "shubiao",‘price‘: 10},
    {"name": ‘youting‘,‘price‘: 20},
    {"name": "shouji","price": 1550},
]
for key,item in enumerate(goods):
    print(key,item)

total = 0
while True:

    inp2 = input("Please enter the product number:")
    inp2_number = int(inp2)
    print(goods[inp2_number],‘has join in the shopping cart‘)
    total1 =  goods[inp2_number][‘price‘]
    total = total + total1
    print(total)
    inp3 = input("如果你不想买了，请输Y/y:")
    i4 = inp3.lower()
    if i4 == ‘y‘:

        break

if inp1_number >= total:
    print(‘OK,you have buy it‘)
else:
    print(‘NO,you cant afford it‘)