我设计了一个AI学情知识库 | 专用记忆结构

{  "courses": [    {      "id": "python-course-2023",      "name": "Python编程基础与实践",      "description": "专为K-12学生设计的Python编程课程，注重实践能力培养",      "objectives": [        "运用Python基础语法解决简单的编程问题",        "分析并实现基本的算法和数据结构",        "设计并开发简单的应用程序",        "评估代码质量并进行优化"      ],      "tools": ["Python"],      "grade_range": "7-12",      "units": [        {          "id": "unit-1",          "name": "Python基础语法与结构",          "objectives": [            "正确使用Python基本数据类型和运算符",            "构建基本的控制流结构(条件语句和循环)",            "创建并调用函数实现代码复用",            "应用字符串和列表操作解决文本处理问题"          ],          "lessons": [            {              "id": "lesson-1-1",              "name": "Python入门与基本数据类型",              "objectives": [                "安装并配置Python开发环境",                "区分并正确使用数值、字符串和布尔类型",                "应用基本运算符执行数学和逻辑运算",                "使用变量存储和操作数据"              ],              "steps": [                {                  "id": "step-1-1-1",                  "name": "环境安装与配置",                  "type": "instruction",                  "content": "讲解Python的安装方法与开发环境配置",                  "duration": 15,                  "assessment": false                },                {                  "id": "step-1-1-2",                  "name": "变量与数据类型",                  "type": "concept",                  "content": "介绍Python的基本数据类型和变量声明",                  "duration": 20,                  "assessment": false                },                {                  "id": "step-1-1-3",                  "name": "基本运算实践",                  "type": "exercise",                  "content": "完成5个基础运算的编程练习，覆盖各种数据类型的操作",                  "duration": 25,                  "assessment": true,                  "exercise": {                    "description": "实现一个简单计算器，能够进行加减乘除和取余运算",                    "requirements": [                      "接受用户输入的两个数字和一个运算符",                      "根据运算符执行相应的运算",                      "处理可能的异常情况(如除零错误)",                      "格式化输出计算结果"                    ],                    "sample_code": "# 请在此实现简单计算器功能\n\n# 获取用户输入\n\n# 执行计算\n\n# 输出结果",                    "evaluation_criteria": [                      "程序能正确处理所有基本运算",                      "代码对异常情况有适当处理",                      "变量命名符合规范",                      "输出结果格式正确"                    ]                  }                }              ]            },/* 剩余课程结构省略 */