Question

有人可以给我一些如何将数据序列化到文件的指南，类似于下面的介绍吗？

{
  "minShift": -0.5,
  "maxShift": 0.5,
  "stepShift": 0.002,
  "feeds": {
    "CFH": "CFH_20140318T0900.txt",
    "LMAX": "LMAX_20140318T0900.txt",
    "Saxo": "Saxo_20140318T0900.txt"
  },
  "instruments": [
      {
        "instrument_old": "CFH/EURUSD",
        "instrument_new": "LMAX/EURUSD"
      },
      {
        "instrument_old": "CFH/EURUSD",
        "instrument_new": "Saxo/EURUSD" 
      },
      {
        "instrument_old": "LMAX/XAUUSD",
        "instrument_new": "Saxo/XAUUSD" 
      }
  ]
}

我有：

shiftData list包含三个元素（min，max和stepShift）
带密钥的字典：value =＆gt; {provider_name：filename}
名为instrumentPairList

我不希望任何人解决我的任务，但在我的案例中，有关Python中JSON的各种教程相当模糊或简单：

它正在尝试序列化minShift，maxShift，stepShift和feed：

data = { "minShift":shiftData[0],"maxShift":shiftData[1],"stepShift":shiftData[2],
          "feeds":[ {key: value} for key, value in providerAliases.items() ] }
  data_string = json.dumps(data)

Answer 1

我的解决方案是：

data = { "minShift":shiftData[0],"maxShift":shiftData[1],"stepShift":shiftData[2],
          "feeds":providerAliases,
           "instruments":[ {"instrument_old":pair[0],"instrument_new":pair[1]}
                            for pair in instrumentPairList ]}
data_string = json.dumps(data, indent=4)

file = open(dir+r"\config.json","w")
file.write(data_string)
file.close()

在python中将数据序列化为JSON

1 个答案: