Python: 如何处理字典列表

Question

我正在尝试存储此 json 中的折扣代码和金额。我不会知道列表中会有多少个字典。

  "discount_codes":[
     {
        "code":"STUDENT",
        "amount":"10.00",
        "type":"percentage"
     },
     {
        "code":"TEACHER",
        "amount":"15.00",
        "type":"percentage"
     }
  ]

我正在尝试这个，但它不起作用：

for codes, x in enumerate(discount_codes):
    discount_code = codes['x']['code']
    discount_amount = codes['x']['amount']
    print (discount_code)
    print (discount_amount)

Answer 1

在列表 return 上枚举索引和值，在你的例子中，值是一个字典，从字典中获取值，如下代码：

for index, value in enumerate(discount_codes):
print(index)
print(value)
discount_code = value['code']
discount_amount = value['amount']
print(discount_code)
print(discount_amount)
#print (discount_code)
#print (discount_amount)

添加了完整的代码并作为图像执行：

Python: 如何处理字典列表

Python: how to process list of dicts

python

dictionary

list

python-3.6