python实现json文件的增删改操作方法

{
  "name": "Alice",
  "age": 30,
  "address": {
    "city": "Beijing",
    "street": "Main Street"
  },
  "hobbies": ["reading", "swimming", "traveling"]
}

import json
# 加载JSON文件
with open('example.json', 'r') as f:
    data = json.load(f)
# 修改姓名
data['name'] = 'Bob'
# 修改年龄
data['age'] = 35
# 修改住址
data['address']['city'] = 'Shanghai'
data['address']['street'] = 'West Street'
# 保存修改后的JSON文件
with open('example.json', 'w') as f:
    json.dump(data, f, indent=2)    # 保持2个缩进

import json
# 加载JSON文件
with open('example.json', 'r') as f:
    data = json.load(f)
# 删除爱好中的一个
data['hobbies'].remove('reading')
# 删除整个address
del data['address']
# 保存修改后的JSON文件
with open('example.json', 'w') as f:
    json.dump(data, f, indent=2)

import json
# 加载JSON文件
with open('example.json', 'r') as f:
    data = json.load(f)
# 新增一个爱好
data['hobbies'].append('writing')
# 新增一个电话号码
data['phone'] = '13888888888'
# 保存修改后的JSON文件
with open('example.json', 'w') as f:
    json.dump(data, f, indent=2)

{
  "users": [
    {
      "name": "John",
      "age": 28,
      "pets": [
        {
          "name": "Fluffy",
          "type": "cat"
        },
        {
          "name": "Fido",
          "type": "dog"
        }
      ]
    },
    {
      "name": "Mary",
      "age": 33,
      "pets": [
        {
          "name": "Rex",
          "type": "dog"
        },
        {
          "name": "Whiskers",
          "type": "cat"
        },
        {
          "name": "Buddy",
          "type": "dog"
        }
      ]
    }
  ]
}

import json
# 读取JSON文件
with open('data.json', 'r') as f:
    data = json.load(f)
# 获取第二个用户的第一个宠物
pet = data['users'][1]['pets'][0]
# 修改宠物名称
pet['name'] = 'Smokey'
# 保存修改后的JSON文件
with open('data.json', 'w') as f:
    json.dump(data, f, indent=2)

{
  "users": [
    {
      "name": "John",
      "age": 28,
      "pets": [
        {
          "name": "Fluffy",
          "type": "cat"
        },
        {
          "name": "Fido",
          "type": "dog"
        }
      ]
    },
    {
      "name": "Mary",
      "age": 33,
      "pets": [
        {
          "name": "Smokey",
          "type": "dog"
        },
        {
          "name": "Whiskers",
          "type": "cat"
        },
        {
          "name": "Buddy",
          "type": "dog"
        }
      ]
    }
  ]
}