如何删除 Python 中 JSON 文件中的空格和 \n

Question

我有 JSON 数据以以下格式进入 S3：

{\n  \"data\": {\n    \"event_type\": \"message.received\",\n    \"id\": \"819\",\n    \"occurred_at\": \"2020-10\",\n    \"payload\": {\n      \"cc\": [],\n      \"completed_at\": null,\n      \"cost\": null,\n      \"direction\": \"inbound\",\n      \"encoding\": \"GSM-7\",\n      \"errors\": [],\n      \"from\": {\n        \"carrier\": \"Verizon\",\n        \"line_type\": \"Wireless\",\n        \"phone_number\": \"+111111111\"\n      },\n      \"id\": \"e8e0d1e3-dce3-\",\n      \"media\": [],\n      \"messaging_profile_id\": \"400176\",\n      \"organization_id\": \"717d556f-ba4f-\",\n      \"parts\": 1,\n      \"received_at\": \"2020-1\",\n      \"record_type\": \"message\",\n      \"sent_at\": null,\n      \"tags\": [],\n      \"text\": \"Hi \",\n      \"to\": [\n        {\n          \"carrier\": \"carr\",\n          \"line_type\": \"Wireless\",\n          \"phone_number\": \"+111111111\",\n}\n}"

我希望它像这样转换：

{
  "data": {
    "event_type": "message.received",
    "id": "76a60230",
    "occurred_at": "2020-12-1",
    "payload": {
      "cc": [],
      "completed_at": null,
      "cost": null,
      "direction": "inbound",
      "encoding": "GSM-7",
      "errors": [],
      "from": {
        "carrier": "Verizon",
        "line_type": "Wireless",
        "phone_number": "+1111111111"
      },
      "id": "06c9c765",
      "media": [],
      "messaging_profile_id": "40017",
      "organization_id": "717d5",
      "parts": 1,
      "received_at": "2020-1",
      "record_type": "message",
      "sent_at": null,
      "tags": [],
      "text": "Hi",
      "to": [
        {
          "carrier": "abc",
          "line_type": "Wireless",
          "phone_number": "+1111111111",
          "status": "delivered"
        }
      ],
      "type": "SMS",
      "valid_until": null,
      "failover_url": null,
      "url": "https://639hpj"
    },
    "record_type": "event"
  },
  "meta": {
    "attempt": 1,
    "delivered_to": "https://639hpj"
  }
}

我保存的第一个 JSON 数据以行而不是 Struct 格式出现。 我没有保留实际的 JSON 数据，但它采用类似的格式（但有效）。 我想运行 lambda function ，其中 JSON 数据不含\n和空格。

以上 2 个 JSON 数据不一样，但我将收到第一种类型的 JSON 数据，我想将其转换为没有空格和\n的第二种类型。

Answer 1

您是否意识到空格和换行符是print用于格式化的？

让我们称之为您的第一个t （我通过在末尾添加缺少的括号来修复它）：

t = '''{\n "data": {\n "event_type": "message.received",\n "id": "819",\n "occurred_at": "2020-10",\n "payload": {\n "cc": [],\n "completed_at": null,\n "cost": null,\n "direction": "inbound",\n "encoding": "GSM-7",\n "errors": [],\n "from": {\n "carrier": "Verizon",\n "line_type": "Wireless",\n "phone_number": "+111111111"\n },\n "id": "e8e0d1e3-dce3-",\n "media": [],\n "messaging_profile_id": "400176",\n "organization_id": "717d556f-ba4f-",\n "parts": 1,\n "received_at": "2020-1",\n "record_type": "message",\n "sent_at": null,\n "tags": [],\n "text": "Hi ",\n "to": [\n {\n "carrier": "carr",\n "line_type": "Wireless",\n "phone_number": "+111111111"\n}\n]\n}}}'''

它打印为：

>>> print(t)
{
 "data": {
 "event_type": "message.received",
 "id": "819",
 "occurred_at": "2020-10",
 "payload": {
 "cc": [],
 "completed_at": null,
 "cost": null,
 "direction": "inbound",
 "encoding": "GSM-7",
 "errors": [],
...

要获得预期的表示，您应该：

1. 将其加载到 Python object 中： js = json.loads(t)

2. 将其转储回缩进为 2 的字符串： t2 = json.dumps(js)

   t2实际上看起来像'{\n "data": {\n "event_type": "message.received",\n "id": "819",\n "occurred_at": "2020-10",\n "payload": {\n "cc": [],\n "completed_at": null,\n "cost": null,\n...

3. 打印它：

    >>> print(t2) { "data": { "event_type": "message.received", "id": "819", "occurred_at": "2020-10", "payload": { "cc": [], "completed_at": null, "cost": null, "direction": "inbound", "encoding": "GSM-7", "errors": [], "from": { "carrier": "Verizon", "line_type": "Wireless", ...

一个班轮可以是：

print(json.dumps(json.loads(t), indent=2))

Answer 2

您可以首先将其加载为 Python 字典：

import json

myDict = json.loads(jsonString)

然后，将其转换回最小化/缩进的 JSON 字符串：

minimizedJSON = json.dumps(myDict)
indentedJSON = json.dumps(myDict, indent = <# of spaces>)

Answer 3

通常，这是通过literal_eval完成的，它将获取您的字符串并将其解析为python 字典：

import ast

# replace with full string of yours
s='{\n "data": {\n "event_type": "message.received",\n "id": "819"\n}\n}'

result = ast.literal_eval(s)

print(type(result), result)