如何在json有效负载中插入变量？

{
  "name": "John",
  "age": 30,
  "email": "john@example.com"
}

{
  "name": "John",
  "age": 30,
  "email": "john@example.com",
  "variable": "variable_value"
}

{
  "name": "John",
  "age": 30,
  "email": "john@example.com",
  "variable": "{{variable_value}}"
}

import json

data = {
  "name": "John",
  "age": 30,
  "email": "john@example.com"
}

variable_value = "some_value"
data["variable"] = variable_value

json_payload = json.dumps(data)
print(json_payload)

{
  "name": "John",
  "age": 30,
  "email": "john@example.com",
  "variable": "some_value"
}