python - 如何使用 json 数据更新现有的 json 文件 python

Question

嘿，我有一个 json 文件，例如: [ { “记者”:“abc”， "创建": "2015-05-28 11:29:16", “受让人”:“ABC”， “ key ”:“JIRA-123” }, { “记者”:“def”， "创建": "2015-05-28 11:29:16", “受让人”:“DEF”， “ key ”:“JIRA-234” } ]

按照上述格式，现在我需要从动态生成的数据中向该文件添加更多条目，让我们说下面的数据

{
    "Reporter": "xyz",
    "Created": "2015-05-28 11:29:16",
    "Assignee": "XYZ",
    "Key": "JIRA-456"
},
{
    "Reporter": "utf",
    "Created": "2015-05-28 11:29:16",
    "Assignee": "UTF",
    "Key": "JIRA-678"
}

但是当我将此数据更新到上面的 json 文件中时，它再次将有一个单独的列表而不是组合。

喜欢:

[
{
    "Reporter": "abc",
    "Created": "2015-05-28 11:29:16",
    "Assignee": "ABC",
    "Key": "JIRA-123"
},
{
    "Reporter": "def",
    "Created": "2015-05-28 11:29:16",
    "Assignee": "DEF",
    "Key": "JIRA-234"
}
]
[
{
    "Reporter": "xyz",
    "Created": "2015-05-28 11:29:16",
    "Assignee": "XYZ",
    "Key": "JIRA-456"
},
{
    "Reporter": "utf",
    "Created": "2015-05-28 11:29:16",
    "Assignee": "UTF",
    "Key": "JIRA-678"
}
]

但我想要的是以下格式

[
{
    "Reporter": "abc",
    "Created": "2015-05-28 11:29:16",
    "Assignee": "ABC",
    "Key": "JIRA-123"
},
{
    "Reporter": "def",
    "Created": "2015-05-28 11:29:16",
    "Assignee": "DEF",
    "Key": "JIRA-234"
},
{
    "Reporter": "xyz",
    "Created": "2015-05-28 11:29:16",
    "Assignee": "XYZ",
    "Key": "JIRA-456"
},
{
    "Reporter": "utf",
    "Created": "2015-05-28 11:29:16",
    "Assignee": "UTF",
    "Key": "JIRA-678"
}
]

我尝试了 r+ 和 a+ 模式，但没有得到我想要的。

with open(os.path.abspath(os.path.join(os.path.dirname(__file__), 'static', 'result', file_name + '_issues.json')), 'r+') as nInfo:
  nInfo.write(json.dumps(file_data,indent=4, separators=(',', ': ')))

任何人都可以帮助实现这一目标吗？

发送! VK

Answer 1

假设您的 json 文件包含对象列表:

首先从文件加载 json

with open('file.json') as f:
    oldjson = json.load(f)

然后用新的字典更新 json 并覆盖文件

oldjson.append(list_of_dicts)
with open('file.json', 'w') as f:
    f.write(json.dumps(oldjson, indent=4, separators=(',', ': ')))