更改字典列表中的字典值答案

【问题标题】：Change dictionary value in list of dictionaries更改字典列表中的字典值
【发布时间】：2019-10-19 18:10:29
【问题描述】：

{
  "__class": "Tape",
  "Clips": [
    {
      "__class": "MotionClip",
      "Id": 4280596098,
      "TrackId": 4094799440,
      "IsActive": 1,
      "StartTime": 180,
      "Duration": 48,
      "ClassifierPath": "world\/maps\/error\/timeline\/moves\/error_intro_walk.msm",
      "GoldMove": 0,
      "CoachId": 0,
      "MoveType": 0,
   {
      "__class": "MotionClip",
      "Id": 2393481294,
      "TrackId": 4094799440,
      "IsActive": 1,
      "StartTime": 372,
      "Duration": 48,
      "ClassifierPath": "world\/maps\/error\/timeline\/moves\/error_ve_opening.msm",
      "GoldMove": 0,
      "CoachId": 0,
      "MoveType": 0,
...

这是一个 json 文件的 sn-p，我想在其中更改数字的显示方式。例如，我想将 1 写为 00000001，将 48 写为 00000048，将 0 写为 00000000。所以整个 json 文件中的所有数字都按我之前所说的那样写。它们可以写成字符串。我不知道如何开始，因为我有字典列表。

【问题讨论】：

标签： json python-3.x list dictionary

【解决方案1】：

假设您的数据实际上是这样的 -

main_dict = {
  "__class": "Tape",
  "Clips": [
    {
      "__class": "MotionClip",
      "Id": 4280596098,
      "TrackId": 4094799440,
      "IsActive": 1,
      "StartTime": 180,
      "Duration": 48,
      "ClassifierPath": "world\/maps\/error\/timeline\/moves\/error_intro_walk.msm",
      "GoldMove": 0,
      "CoachId": 0,
      "MoveType": 0,
   },
   {
      "__class": "MotionClip",
      "Id": 2393481294,
      "TrackId": 4094799440,
      "IsActive": 1,
      "StartTime": 372,
      "Duration": 48,
      "ClassifierPath": "world\/maps\/error\/timeline\/moves\/error_ve_opening.msm",
      "GoldMove": 0,
      "CoachId": 0,
      "MoveType": 0,
   }
  ]
}

您可以执行以下操作 -

#Accessing a specific key in a dict, in this case Clips (list of dicts)
list_dicts = main_dict.get('Clips')  

#Function to fix/edit specific values in the list of dict based on what key they belong to
def fix_value(k,v):

    if k=='Duration':
        return '00000'+str(v)

    #Add more elseif in between with various things you wanna handle 

    else:
        return v

#Iterating over each key, value in each dict in list of dicts and applying above function on the values

[{k:fix_value(k,v) for k,v in i.items()} for i in list_dicts]

结果 -

[{'__class': 'MotionClip',
  'Id': 4280596098,
  'TrackId': 4094799440,
  'IsActive': 1,
  'StartTime': 180,
  'Duration': '0000048',
  'ClassifierPath': 'world\\/maps\\/error\\/timeline\\/moves\\/error_intro_walk.msm',
  'GoldMove': 0,
  'CoachId': 0,
  'MoveType': 0},
 {'__class': 'MotionClip',
  'Id': 2393481294,
  'TrackId': 4094799440,
  'IsActive': 1,
  'StartTime': 372,
  'Duration': '0000048',
  'ClassifierPath': 'world\\/maps\\/error\\/timeline\\/moves\\/error_ve_opening.msm',
  'GoldMove': 0,
  'CoachId': 0,
  'MoveType': 0}]

【讨论】：

data=[{k:fix_value(k,v) for k,v in i.items()} for i in list_dicts] s = json.dumps(data, indent=4) print(re.sub('(\d+)', lambda i: hex(int(i.group(0))),s)) 最后两行应该将所有数字转换为十六进制。他们有，但我没有得到我想要的格式。它们是打印出来的，因为我什至没有应用您的解决方案。我只使用最后两行代码就得到了相同的结果。
[{"__class": "MotionClip", "Id": 0xff24b682, "TrackId": 0xf411ae50, "IsActive": "0x1", "StartTime": 0xb4, "Duration": 0x30, "ClassifierPath": "world/maps/error/timeline/moves/error_intro_walk.msm", "GoldMove": 0x0, "CoachId": 0x0, "MoveType": 0x0}, {"__class": "MotionClip", "Id": 0x8ea9a04e, "TrackId": 0xf411ae50, "IsActive": "0x1", "StartTime": 0x174, "Duration": 0x30, "ClassifierPath": "world/maps/error/timeline/moves/error_ve_opening.msm", "GoldMove": 0x0, "CoachId": 0x0, "MoveType": 0x0}