Json解析python错误

Question

我有以下命令。我想循环使用此键和值，即对于冰/冷的项目，打印“值”

[
      {
        "ice/cold": [
          "vanilla",
          "hotchoc",
          "mango",
          "banana"
        ]
      },
      {
        "fire/hot": [
          "barbecue",
          "hotsalsa",
          "sriracha",
          "kirikiri"
        ]
      },
      {
        "friendly/mild": [
          "ketchup",
          "mustard",
          "ranch",
          "dipster"
        ]
      }
    ]

我试过这个：

data='*above set*'
for key in data.items():
     print value

却给我错误

AttributeError: 'list' object has no attribute 'items'

Answer 1

这里的data实际上是一个列表而不是一个字典，列表的每个索引都是一个字典，所以只需遍历列表的所有元素，看看它是否对应于所需的字典

这是密码

data= [
  {
    "ice/cold": [
      "vanilla",
      "hotchoc",
      "mango",
      "banana"
    ]
  },
  {
    "fire/hot": [
      "barbecue",
      "hotsalsa",
      "sriracha",
      "kirikiri"
    ]
  },
  {
    "friendly/mild": [
      "ketchup",
      "mustard",
      "ranch",
      "dipster"
    ]
  }
]
for items in data:
for key, value in items.iteritems():
    if key == "ice/cold":
        print value

Answer 2

您拥有的数据结构有点奇怪。你没有一个单独的dict，你有一个dict列表，每个dict都有一个键，它本身包含一个列表。您可以这样做：

for item in data:
     for key, value in item.items():
         print value

但是更好的方法是改变结构，这样你就只有一个判决：

  {
    "ice/cold": [
      "vanilla",
      "hotchoc",
      "mango",
      "banana"
    ],
    "fire/hot": [
      "barbecue",
      "hotsalsa",
      "sriracha",
      "kirikiri"
    ],
    "friendly/mild": [
      "ketchup",
      "mustard",
      "ranch",
      "dipster"
    ]
  }