Python中实现JSON数据读写的编程实战指南

{
  "name": "Alice",
  "age": 25,
  "is_student": false,
  "skills": ["Python", "Java", "SQL"]
}

import json

data = {
    "name": "Alice",
    "age": 25,
    "skills": ["Python", "Data Analysis"]
}

json_str = json.dumps(data, ensure_ascii=False, indent=4)
print(json_str)

import json

json_str = '{"name": "Alice", "age": 25, "skills": ["Python", "Data Analysis"]}'
data = json.loads(json_str)
print(data["name"])

import json

user = {
    "id": 1001,
    "name": "Bob",
    "vip": True,
    "balance": 99.8
}

with open("user.json", "w", encoding="utf-8") as f:
    json.dump(user, f, ensure_ascii=False, indent=4)

print("JSON 文件写入完成")

import json

with open("user.json", "r", encoding="utf-8") as f:
    user_info = json.load(f)

print(user_info)
print(type(user_info))

{
  "version": "1.0",
  "debug": true,
  "users": ["admin", "guest"]
}

import json

# 读取配置
with open("config.json", "r", encoding="utf-8") as f:
    config = json.load(f)

# 修改参数
config["debug"] = False
config["users"].append("developer")

# 保存回文件
with open("config.json", "w", encoding="utf-8") as f:
    json.dump(config, f, ensure_ascii=False, indent=4)

print("配置文件已更新")

import json

try:
    with open("data.json", "r", encoding="utf-8") as f:
        data = json.load(f)
except FileNotFoundError:
    print("文件未找到")
except json.JSONDecodeError:
    print("JSON 格式错误")
else:
    print("读取成功")