1959 lines
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1959 lines
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"content": "<p style=\"font-size:18px; font-family:'Courier New', monospace; color:#f8f8f2; text-align:center;\">print('Hello, World!') <span style=\"color:#6a9955;\"># 输出 Hello, World!</span></p>",
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"text": "同学们好，今天我们来探索 Python 中的变量与数据类型。通过这个交互式代码编辑器，我们可以亲手输入代码并观察结果。"
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"text": "请先完成前四个练习：创建字符串变量 name、整数变量 age、浮点数变量 height，以及布尔值变量 is_student。注意变量名要清晰，赋值用等号。"
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"text": "接下来，用 type() 函数查看这些变量的类型。例如 print(type(name)) 会告诉我们 name 是字符串类型。运行后请观察输出面板。"
|
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"content": "运行后输出结果显示在这里。"
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"type": "speech",
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"text": "最后，试着修改其中一个变量的值，比如把 age 改成 16，然后再次运行，看看输出有什么变化。"
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|
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0.72rem;\n padding: 12px 14px;\n }\n .tests-panel .tests-header {\n padding: 10px 14px;\n font-size: 0.82rem;\n }\n }\n @media (max-width: 380px) {\n .btn-row {\n flex-direction: column;\n }\n .btn {\n width: 100%;\n }\n }\n </style>\n\n<link rel=\"stylesheet\" href=\"https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.css\">\n<script src=\"https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.js\"></script>\n<script src=\"https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/contrib/auto-render.min.js\"></script>\n<script>\ndocument.addEventListener(\"DOMContentLoaded\", function() {\n const katexOptions = {\n delimiters: [\n {left: '\\\\[', right: '\\\\]', display: true},\n {left: '\\\\(', right: '\\\\)', display: false},\n {left: '$$', right: '$$', display: true},\n {left: '$', right: '$', display: false}\n ],\n throwOnError: false,\n strict: false,\n trust: true\n };\n\n let renderTimeout;\n function safeRender() {\n if (renderTimeout) clearTimeout(renderTimeout);\n renderTimeout = setTimeout(() => {\n renderMathInElement(document.body, katexOptions);\n }, 100);\n }\n\n renderMathInElement(document.body, katexOptions);\n\n const observer = new MutationObserver((mutations) => {\n let shouldRender = false;\n mutations.forEach((mutation) => {\n if (mutation.target &&\n mutation.target.className &&\n typeof mutation.target.className === 'string' &&\n mutation.target.className.includes('katex')) {\n return;\n }\n shouldRender = true;\n });\n\n if (shouldRender) {\n safeRender();\n }\n });\n\n observer.observe(document.body, {\n childList: true,\n subtree: true,\n characterData: true\n });\n\n setInterval(() => {\n const text = document.body.innerText;\n if (text.includes('\\\\(') || text.includes('$$')) {\n safeRender();\n }\n }, 2000);\n});\n</script>\n</head>\n<body>\n\n <div class=\"widget-container\" id=\"widget-root\">\n <!-- Header -->\n <header class=\"widget-header\" id=\"widget-header\">\n <h1>🐍 变量与数据类型探索</h1>\n <p class=\"description\">通过交互式代码练习，理解 Python 中的变量赋值与常见数据类型。动手输入代码，观察运行结果！</p>\n <div class=\"key-points\">\n <span class=\"key-point\">📝 变量命名与赋值</span>\n <span class=\"key-point\">🔤 字符串 str</span>\n <span class=\"key-point\">🔢 整数 int</span>\n <span class=\"key-point\">⚡ 浮点数 float</span>\n <span class=\"key-point\">✓ 布尔值 bool</span>\n <span class=\"key-point\">🔍 type() 函数</span>\n </div>\n </header>\n\n <!-- Status Bar -->\n <div id=\"status-bar\">\n <span class=\"status-dot\" id=\"status-dot\"></span>\n <span id=\"status-text\">正在加载 Python 环境...</span>\n </div>\n\n <!-- Editor -->\n <div class=\"editor-wrapper\" id=\"editor-wrapper\">\n <div class=\"editor-header\">\n <span>main.py</span>\n <span class=\"lang-badge\">Python 3</span>\n </div>\n <textarea id=\"code-input\"></textarea>\n </div>\n\n <!-- Buttons -->\n <div class=\"btn-row\" id=\"btn-row\">\n <button class=\"btn btn-primary\" id=\"run-btn\" disabled title=\"先等 Python 环境加载完成\">\n ▶ 运行代码\n </button>\n <button class=\"btn btn-secondary\" id=\"hint-btn\" disabled title=\"加载完成后可获取提示\">\n 💡 提示 (<span id=\"hint-count\">0</span>/<span id=\"hint-total\">0</span>)\n </button>\n <button class=\"btn btn-secondary\" id=\"solution-btn\" title=\"查看参考答案\">\n 📖 参考答案\n </button>\n </div>\n\n <!-- Output -->\n <div class=\"output-panel\" id=\"output-panel\">\n <div class=\"output-header\">\n <span class=\"dot\" id=\"output-dot\"></span>\n 输出\n </div>\n <div id=\"output\">代码运行结果将显示在这里...</div>\n </div>\n\n <!-- Tests -->\n <div class=\"tests-panel\" id=\"tests-panel\">\n <div class=\"tests-header\" id=\"tests-header\">\n <span>🧪 测试用例 <span class=\"tests-summary\" id=\"tests-summary\"></span></span>\n <span class=\"toggle-icon\" id=\"tests-toggle-icon\">▼</span>\n </div>\n <div id=\"test-results\">\n <div style=\"padding:16px;color:#8892a8;font-size:0.85rem;text-align:center;\">运行代码后自动检查</div>\n </div>\n </div>\n\n <!-- Hints -->\n <div class=\"hints-panel\" id=\"hints-panel\">\n <div class=\"hints-header\">💡 提示（逐步显示）</div>\n <div id=\"hints-container\">\n <div class=\"no-hints\">点击\"提示\"按钮查看提示</div>\n </div>\n </div>\n\n <!-- Solution -->\n <div class=\"solution-panel\" id=\"solution\" style=\"display:none;\">\n <div class=\"solution-header\">📖 参考答案</div>\n <pre id=\"solution-code\"></pre>\n </div>\n\n <!-- Widget Config -->\n <details class=\"widget-config-wrapper\" id=\"widget-config-wrapper\">\n <summary>📋 查看组件配置 (JSON)</summary>\n <pre id=\"widget-config-display\"></pre>\n </details>\n </div>\n\n <!-- Embedded Widget Configuration JSON -->\n <script type=\"application/json\" id=\"widget-config\">\n {\n \"type\": \"code\",\n \"language\": \"python\",\n \"description\": \"通过交互式代码练习理解变量赋值与常见数据类型。掌握变量命名、字符串/整数/浮点数/布尔值，以及 type() 函数的使用。\",\n \"starterCode\": \"# === 变量与数据类型探索 ===\\n# 请完成以下练习：\\n\\n# 1. 创建一个字符串变量 name，值为你的名字\\n# 例如：name = \\\"小明\\\"\\n\\n# 2. 创建一个整数变量 age，值为你的年龄\\n# 例如：age = 15\\n\\n# 3. 创建一个浮点数变量 height，值为你的身高（米）\\n# 例如：height = 1.75\\n\\n# 4. 创建一个布尔值变量 is_student，表示你是否是学生\\n# 例如：is_student = True\\n\\n# 5. 使用 type() 函数查看这些变量的类型\\n# 例如：print(type(name))\\n\\n# 6. 尝试修改其中一个变量的值，并打印修改前后的值\\n\\n# 请在下方编写你的代码：\\n\",\n \"testCases\": [\n { \"id\": \"t1\", \"input\": \"type(name).__name__\", \"expected\": \"str\", \"description\": \"变量 name 是字符串 (str) 类型\" },\n { \"id\": \"t2\", \"input\": \"type(age).__name__\", \"expected\": \"int\", \"description\": \"变量 age 是整数 (int) 类型\" },\n { \"id\": \"t3\", \"input\": \"type(height).__name__\", \"expected\": \"float\", \"description\": \"变量 height 是浮点数 (float) 类型\" },\n { \"id\": \"t4\", \"input\": \"type(is_student).__name__\", \"expected\": \"bool\", \"description\": \"变量 is_student 是布尔 (bool) 类型\" },\n { \"id\": \"t5\", \"input\": \"__code_contains_type__\", \"expected\": \"True\", \"description\": \"使用了 type() 函数查看类型\" }\n ],\n \"hints\": [\n \"变量赋值使用等号 =，左边是变量名，右边是值。例如：name = '小明'\",\n \"Python 中基本数据类型：字符串用引号 '...' 或 \\\"...\\\" 括起来；整数直接写数字如 15；浮点数带小数点如 1.75；布尔值是 True 或 False（注意首字母大写）\",\n \"使用 type() 函数可以查看变量类型。例如：print(type(name)) 会输出 <class 'str'>，表示字符串类型\",\n \"修改变量值只需重新赋值。例如：age = 16 会将 age 的值从 15 改为 16。修改后打印可以观察变化\"\n ],\n \"solution\": \"# 创建不同类型的变量\\nname = \\\"小明\\\" # 字符串 (str)\\nage = 15 # 整数 (int)\\nheight = 1.75 # 浮点数 (float)\\nis_student = True # 布尔值 (bool)\\n\\n# 使用 type() 查看类型\\nprint(type(name))\\nprint(type(age))\\nprint(type(height))\\nprint(type(is_student))\\n\\n# 修改变量的值\\nage = 16\\nprint(f\\\"修改后的年龄: {age}\\\")\"\n }\n </script>\n\n <!-- CodeMirror 5 -->\n <script src=\"https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.16/codemirror.min.js\"></script>\n <script src=\"https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.16/mode/python/python.min.js\"></script>\n <script src=\"https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.16/addon/edit/matchbrackets.min.js\"></script>\n <script src=\"https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.16/addon/edit/closebrackets.min.js\"></script>\n\n <!-- Pyodide -->\n <script src=\"https://cdn.jsdelivr.net/pyodide/v0.26.4/full/pyodide.js\"></script>\n\n <script>\n (function() {\n 'use strict';\n\n // ===== Load Widget Config =====\n const configEl = document.getElementById('widget-config');\n const WIDGET_CONFIG = JSON.parse(configEl.textContent);\n\n // Display the config JSON\n document.getElementById('widget-config-display').textContent = JSON.stringify(WIDGET_CONFIG, null, 2);\n\n // ===== DOM References =====\n const runBtn = document.getElementById('run-btn');\n const hintBtn = document.getElementById('hint-btn');\n const solutionBtn = document.getElementById('solution-btn');\n const outputEl = document.getElementById('output');\n const outputDot = document.getElementById('output-dot');\n const statusText = document.getElementById('status-text');\n const statusDot = document.getElementById('status-dot');\n const testResultsEl = document.getElementById('test-results');\n const testsHeader = document.getElementById('tests-header');\n const 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|
||
"widgetType": "code",
|
||
"widgetConfig": {
|
||
"type": "code",
|
||
"language": "python",
|
||
"description": "通过交互式代码练习理解变量赋值与常见数据类型。掌握变量命名、字符串/整数/浮点数/布尔值，以及 type() 函数的使用。",
|
||
"starterCode": "# === 变量与数据类型探索 ===\n# 请完成以下练习：\n\n# 1. 创建一个字符串变量 name，值为你的名字\n# 例如：name = \"小明\"\n\n# 2. 创建一个整数变量 age，值为你的年龄\n# 例如：age = 15\n\n# 3. 创建一个浮点数变量 height，值为你的身高（米）\n# 例如：height = 1.75\n\n# 4. 创建一个布尔值变量 is_student，表示你是否是学生\n# 例如：is_student = True\n\n# 5. 使用 type() 函数查看这些变量的类型\n# 例如：print(type(name))\n\n# 6. 尝试修改其中一个变量的值，并打印修改前后的值\n\n# 请在下方编写你的代码：\n",
|
||
"testCases": [
|
||
{
|
||
"id": "t1",
|
||
"input": "type(name).__name__",
|
||
"expected": "str",
|
||
"description": "变量 name 是字符串 (str) 类型"
|
||
},
|
||
{
|
||
"id": "t2",
|
||
"input": "type(age).__name__",
|
||
"expected": "int",
|
||
"description": "变量 age 是整数 (int) 类型"
|
||
},
|
||
{
|
||
"id": "t3",
|
||
"input": "type(height).__name__",
|
||
"expected": "float",
|
||
"description": "变量 height 是浮点数 (float) 类型"
|
||
},
|
||
{
|
||
"id": "t4",
|
||
"input": "type(is_student).__name__",
|
||
"expected": "bool",
|
||
"description": "变量 is_student 是布尔 (bool) 类型"
|
||
},
|
||
{
|
||
"id": "t5",
|
||
"input": "__code_contains_type__",
|
||
"expected": "True",
|
||
"description": "使用了 type() 函数查看类型"
|
||
}
|
||
],
|
||
"hints": [
|
||
"变量赋值使用等号 =，左边是变量名，右边是值。例如：name = '小明'",
|
||
"Python 中基本数据类型：字符串用引号 '...' 或 \"...\" 括起来；整数直接写数字如 15；浮点数带小数点如 1.75；布尔值是 True 或 False（注意首字母大写）",
|
||
"使用 type() 函数可以查看变量类型。例如：print(type(name)) 会输出 <class 'str'>，表示字符串类型",
|
||
"修改变量值只需重新赋值。例如：age = 16 会将 age 的值从 15 改为 16。修改后打印可以观察变化"
|
||
],
|
||
"solution": "# 创建不同类型的变量\nname = \"小明\" # 字符串 (str)\nage = 15 # 整数 (int)\nheight = 1.75 # 浮点数 (float)\nis_student = True # 布尔值 (bool)\n\n# 使用 type() 查看类型\nprint(type(name))\nprint(type(age))\nprint(type(height))\nprint(type(is_student))\n\n# 修改变量的值\nage = 16\nprint(f\"修改后的年龄: {age}\")"
|
||
}
|
||
}
|
||
},
|
||
{
|
||
"id": "scene_CFJoA09QKZ",
|
||
"stageId": "DZynj92UuU",
|
||
"title": "条件判断：if/elif/else",
|
||
"order": 4,
|
||
"actions": [
|
||
{
|
||
"id": "action_DzeZjLaG",
|
||
"type": "spotlight",
|
||
"elementId": "text_6oz4loS5"
|
||
},
|
||
{
|
||
"id": "action_xMld6KcY",
|
||
"type": "speech",
|
||
"text": "同学们，我们来看 Python 中的条件判断。简单说，就是让程序根据不同的情况，做出不同的决定。"
|
||
},
|
||
{
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{\n padding: 10px 12px;\n gap: 6px;\n }\n .btn {\n padding: 6px 12px;\n font-size: 0.8rem;\n }\n .header {\n padding: 14px 16px;\n }\n .header h1 {\n font-size: 1.2rem;\n }\n .test-item {\n flex-direction: column;\n align-items: flex-start;\n gap: 4px;\n }\n .test-detail {\n word-break: break-all;\n }\n }\n </style>\n\n<link rel=\"stylesheet\" href=\"https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.css\">\n<script src=\"https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.js\"></script>\n<script src=\"https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/contrib/auto-render.min.js\"></script>\n<script>\ndocument.addEventListener(\"DOMContentLoaded\", function() {\n const katexOptions = {\n delimiters: [\n {left: '\\\\[', right: '\\\\]', display: true},\n {left: '\\\\(', right: '\\\\)', display: false},\n {left: '$$', right: '$$', display: true},\n {left: '$', right: '$', display: false}\n ],\n throwOnError: false,\n strict: false,\n trust: true\n };\n\n let renderTimeout;\n function safeRender() {\n if (renderTimeout) clearTimeout(renderTimeout);\n renderTimeout = setTimeout(() => {\n renderMathInElement(document.body, katexOptions);\n }, 100);\n }\n\n renderMathInElement(document.body, katexOptions);\n\n const observer = new MutationObserver((mutations) => {\n let shouldRender = false;\n mutations.forEach((mutation) => {\n if (mutation.target &&\n mutation.target.className &&\n typeof mutation.target.className === 'string' &&\n mutation.target.className.includes('katex')) {\n return;\n }\n shouldRender = true;\n });\n\n if (shouldRender) {\n safeRender();\n }\n });\n\n observer.observe(document.body, {\n childList: true,\n subtree: true,\n characterData: true\n });\n\n setInterval(() => {\n const text = document.body.innerText;\n if (text.includes('\\\\(') || text.includes('$$')) {\n safeRender();\n }\n }, 2000);\n});\n</script>\n</head>\n<body>\n <div class=\"container\">\n <!-- 页头 -->\n <div class=\"header\" id=\"widget-header\">\n <h1>🐍 函数调试练习</h1>\n <p class=\"description\">通过交互式代码练习修改函数参数并观察返回值。亲手尝试、观察变化、理解函数！</p>\n <div class=\"key-points\">\n <span class=\"badge\">📝 定义带参数的函数</span>\n <span class=\"badge\">🔧 调用函数并打印结果</span>\n <span class=\"badge\">🔍 修改参数观察输出变化</span>\n </div>\n </div>\n\n <!-- 主内容区 -->\n <div class=\"main-content\">\n <!-- 编辑器卡片 -->\n <div class=\"editor-card\" id=\"editor-card\">\n <div class=\"toolbar\">\n <button id=\"run-btn\" class=\"btn btn-primary\" disabled>▶ 运行代码</button>\n <button id=\"hint-btn\" class=\"btn btn-secondary\">💡 提示</button>\n <button id=\"reset-btn\" class=\"btn btn-secondary\">↺ 重置</button>\n <span class=\"status-badge\">\n <span id=\"status-dot\" class=\"status-dot\"></span>\n <span id=\"status\">Python 环境加载中...</span>\n </span>\n </div>\n <div id=\"code-input\" class=\"code-editor-host\"></div>\n </div>\n\n <!-- 输出面板 -->\n <div class=\"output-card\" id=\"output-card\">\n <div class=\"output-header\">📤 输出结果</div>\n <div id=\"output\" class=\"output-content\">点击「运行代码」查看输出...</div>\n </div>\n\n <!-- 测试用例 -->\n <div class=\"test-card\" id=\"test-card\">\n <div class=\"test-header\" id=\"test-toggle\">\n <span>🧪 测试用例</span>\n <span class=\"toggle-icon\">▼</span>\n </div>\n <div class=\"test-results\" id=\"test-results\">\n <div class=\"test-item pending\">\n <span class=\"test-icon\">⏳</span>\n <span class=\"test-desc\">运行代码后自动验证</span>\n </div>\n </div>\n </div>\n\n <!-- 提示区域 -->\n <div class=\"hints-section\" id=\"hints-section\">\n <h3>💡 学习提示</h3>\n <div id=\"hints-container\"></div>\n </div>\n\n <!-- 参考解答 -->\n <div class=\"solution-section\" id=\"solution\">\n <h3>✅ 参考解答</h3>\n <pre id=\"solution-code\"></pre>\n </div>\n </div>\n </div>\n\n <script>\n // ==========================================\n // 内嵌 Widget 配置 JSON\n // ==========================================\n const widgetConfig = {\n \"type\": \"code\",\n \"language\": \"python\",\n \"description\": \"通过交互式代码练习修改函数参数并观察返回值。\",\n \"starterCode\": \"# 定义一个带参数的函数\\ndef double(x):\\n return x * 2\\n\\n# 调用函数并打印结果\\nprint(double(5))\\nprint(double(10))\\nprint(double(100))\",\n \"testCases\": [\n { \"id\": \"t1\", \"input\": \"5\", \"expected\": \"10\", \"description\": \"double(5) 应该返回 10\" },\n { \"id\": \"t2\", \"input\": \"10\", \"expected\": \"20\", \"description\": \"double(10) 应该返回 20\" },\n { \"id\": \"t3\", \"input\": \"100\", \"expected\": \"200\", \"description\": \"double(100) 应该返回 200\" }\n ],\n \"hints\": [\n \"函数使用 def 关键字定义，括号里的 x 是参数（parameter），它代表了传入的值。\",\n \"return 语句把计算结果返回给调用者。x * 2 就是计算 x 的两倍。\",\n \"修改 print(double(5)) 里的数字，比如改成 double(20) 或 double(50)，看看输出有什么变化。\",\n \"试试传入负数或小数，比如 print(double(-3)) 或 print(double(2.5))，Python 会自动处理。\"\n ],\n \"solution\": \"def double(x):\\n return x * 2\\n\\nprint(double(5))\\nprint(double(10))\\nprint(double(100))\"\n };\n\n // ==========================================\n // 全局变量\n // ==========================================\n let pyodide = null;\n let editor = null; // CodeMirror 实例（全局，供 postMessage 使用）\n let currentHintIndex = 0;\n let testsRun = false;\n const hintsList = widgetConfig.hints || [];\n\n // ==========================================\n // 初始化 CodeMirror 编辑器\n // ==========================================\n function initEditor() {\n editor = CodeMirror(document.getElementById('code-input'), {\n mode: 'python',\n theme: 'default',\n lineNumbers: true,\n value: widgetConfig.starterCode,\n indentUnit: 4,\n tabSize: 4,\n indentWithTabs: false,\n lineWrapping: true,\n viewportMargin: Infinity,\n autoCloseBrackets: true,\n matchBrackets: true,\n });\n editor.setSize('100%', '100%');\n editor.refresh();\n // 确保在容器大小变化时正确刷新\n setTimeout(() => editor.refresh(), 100);\n }\n\n // ==========================================\n // 初始化 Pyodide\n // ==========================================\n async function initPyodide() {\n const statusEl = document.getElementById('status');\n const dotEl = document.getElementById('status-dot');\n try {\n pyodide = await loadPyodide();\n // 本练习不需要额外包，但示例展示如何加载\n // await pyodide.loadPackage(['numpy']);\n dotEl.classList.add('ready');\n statusEl.textContent = 'Python 环境已就绪';\n document.getElementById('run-btn').disabled = false;\n } catch (e) {\n dotEl.style.background = '#ef4444';\n dotEl.style.animation = 'none';\n statusEl.textContent = 'Python 环境加载失败: ' + e.message;\n document.getElementById('run-btn').disabled = true;\n }\n }\n\n // ==========================================\n // 运行用户代码 + 执行测试\n // ==========================================\n async function runCode() {\n if (!pyodide) {\n alert('Python 环境尚未准备就绪，请稍候。');\n return;\n }\n\n const code = editor.getValue().trim();\n if (!code) {\n document.getElementById('output').innerHTML =\n '<span class=\"error-text\">错误：代码为空，请输入代码。</span>';\n return;\n }\n\n const outputEl = document.getElementById('output');\n outputEl.textContent = '正在运行...';\n\n try {\n // CRITICAL: 必须同时导入 sys 和 io，然后再重定向 stdout\n await pyodide.runPythonAsync(`\nimport sys\nimport io\nsys.stdout = io.StringIO()\n`);\n\n // 异步执行用户代码\n await pyodide.runPythonAsync(code);\n\n // 获取标准输出内容\n const userOutput = pyodide.runPython('sys.stdout.getvalue()');\n\n if (userOutput && userOutput.trim()) {\n outputEl.textContent = userOutput;\n } else {\n outputEl.innerHTML = '<span class=\"success-text\">（代码执行成功，但没有打印输出。试着用 print() 打印结果吧！）</span>';\n }\n\n // 执行测试用例\n await runTestCases();\n\n } catch (e) {\n // 提取 Python 错误信息\n let errorMsg = e.message;\n // 清理常见前缀\n if (errorMsg.includes('PythonError')) {\n errorMsg = errorMsg.replace(/^PythonError:\\s*/g, '');\n }\n outputEl.innerHTML = '<span class=\"error-text\">❌ 错误: ' +\n escapeHtml(errorMsg) + '</span>';\n markAllTestsFailed('代码有错误');\n }\n }\n\n // ==========================================\n // 运行测试用例\n // ==========================================\n async function runTestCases() {\n const testCases = widgetConfig.testCases || [];\n const resultsContainer = document.getElementById('test-results');\n testsRun = true;\n\n if (testCases.length === 0) {\n resultsContainer.innerHTML =\n '<div class=\"test-item pending\"><span class=\"test-icon\">📋</span><span class=\"test-desc\">本练习没有设置测试用例，请自由探索！</span></div>';\n return;\n }\n\n let passCount = 0;\n let resultsHtml = '';\n\n for (const tc of testCases) {\n const funcName = 'double'; // 从 starterCode 中推断函数名\n const expr = funcName + '(' + tc.input + ')';\n let pass = false;\n let actualValue = '未定义';\n let errorDetail = '';\n\n try {\n // 在 Pyodide 中运行表达式，获取结果\n const resultScript = `\n__test_result = ${expr}\n__test_result_str = str(__test_result)\n`;\n await pyodide.runPythonAsync(resultScript);\n const actual = pyodide.runPython('__test_result_str');\n actualValue = actual;\n // 比较（字符串比较，兼容数字和字符串类型）\n pass = (actual === String(tc.expected));\n } catch (e) {\n errorDetail = e.message.replace(/^PythonError:\\s*/g, '');\n errorDetail = errorDetail.split('\\n')[0]; // 只取第一行\n actualValue = '错误: ' + errorDetail;\n pass = false;\n }\n\n if (pass) passCount++;\n\n resultsHtml += `\n <div class=\"test-item ${pass ? 'pass' : 'fail'}\">\n <span class=\"test-icon\">${pass ? '✅' : '❌'}</span>\n <span class=\"test-desc\">${escapeHtml(tc.description || tc.id)}</span>\n <span class=\"test-detail\">${escapeHtml(expr)} → 期望 ${escapeHtml(String(tc.expected))} / 实际 ${escapeHtml(actualValue)}</span>\n </div>`;\n }\n\n // 添加摘要\n const summaryClass = passCount === testCases.length ? 'pass' : 'fail';\n resultsHtml += `\n <div class=\"test-item ${summaryClass}\" style=\"font-weight:600;margin-top:4px;\">\n <span class=\"test-icon\">${passCount === testCases.length ? '🏆' : '📊'}</span>\n <span class=\"test-desc\">测试结果：${passCount} / ${testCases.length} 通过</span>\n </div>`;\n\n resultsContainer.innerHTML = resultsHtml;\n }\n\n function markAllTestsFailed(reason) {\n const resultsContainer = document.getElementById('test-results');\n const testCases = widgetConfig.testCases || [];\n let html = '';\n for (const tc of testCases) {\n html += `\n <div class=\"test-item fail\">\n <span class=\"test-icon\">❌</span>\n <span class=\"test-desc\">${escapeHtml(tc.description || tc.id)}</span>\n <span class=\"test-detail\">${escapeHtml(reason)}</span>\n </div>`;\n }\n if (testCases.length > 0) {\n html += `\n <div class=\"test-item fail\" style=\"font-weight:600;margin-top:4px;\">\n <span class=\"test-icon\">📊</span>\n <span class=\"test-desc\">测试结果：0 / ${testCases.length} 通过</span>\n </div>`;\n }\n resultsContainer.innerHTML = html;\n testsRun = true;\n }\n\n // ==========================================\n // 提示系统（逐条显示）\n // ==========================================\n function showNextHint() {\n const hintsSection = document.getElementById('hints-section');\n const hintsContainer = document.getElementById('hints-container');\n\n if (!hintsSection.classList.contains('visible')) {\n hintsSection.classList.add('visible');\n }\n\n if (currentHintIndex < hintsList.length) {\n const hint = hintsList[currentHintIndex];\n const hintEl = document.createElement('div');\n hintEl.className = 'hint-item';\n hintEl.id = 'hint-' + (currentHintIndex + 1);\n hintEl.innerHTML = '<strong>提示 ' + (currentHintIndex + 1) + '：</strong> ' + escapeHtml(hint);\n hintsContainer.appendChild(hintEl);\n currentHintIndex++;\n\n if (currentHintIndex >= hintsList.length) {\n document.getElementById('hint-btn').textContent = '💡 提示已全部显示';\n document.getElementById('hint-btn').disabled = true;\n }\n }\n }\n\n // ==========================================\n // 重置代码到初始状态\n // ==========================================\n function resetCode() {\n if (editor) {\n editor.setValue(widgetConfig.starterCode);\n editor.clearHistory();\n document.getElementById('output').textContent = '已重置，点击「运行代码」查看输出。';\n // 重置测试状态\n const resultsContainer = document.getElementById('test-results');\n resultsContainer.innerHTML =\n '<div class=\"test-item pending\"><span class=\"test-icon\">⏳</span><span class=\"test-desc\">运行代码后自动验证</span></div>';\n testsRun = false;\n // 重置提示\n currentHintIndex = 0;\n document.getElementById('hints-container').innerHTML = '';\n document.getElementById('hints-section').classList.remove('visible');\n document.getElementById('hint-btn').textContent = '💡 提示';\n document.getElementById('hint-btn').disabled = false;\n // 隐藏参考解答\n document.getElementById('solution').classList.remove('visible');\n }\n }\n\n // ==========================================\n // 工具函数：HTML 转义\n // ==========================================\n function escapeHtml(str) {\n if (str === null || str === undefined) return '';\n const div = document.createElement('div');\n div.textContent = str;\n return div.innerHTML;\n }\n\n // ==========================================\n // CRITICAL: postMessage 事件监听器 (REQUIRED)\n // ==========================================\n window.addEventListener('message', function(event) {\n const { type, target, state, content } = event.data;\n\n switch (type) {\n case 'SET_WIDGET_STATE':\n // 加载代码到编辑器，可选择性运行\n if (state && typeof state.code === 'string') {\n if (typeof editor !== 'undefined' && editor && typeof editor.setValue ===\n 'function') {\n editor.setValue(state.code);\n } else {\n const ta = document.getElementById('code-input');\n if (ta) ta.value = state.code;\n }\n }\n if (state && state.run && typeof runCode === 'function') {\n runCode();\n }\n break;\n\n case 'HIGHLIGHT_ELEMENT':\n const highlightEl = document.querySelector(target);\n if (highlightEl) {\n highlightEl.style.outline = '3px solid rgba(124, 58, 237, 0.8)';\n highlightEl.style.outlineOffset = '4px';\n highlightEl.style.animation = 'pulse-highlight 2s infinite';\n setTimeout(() => {\n highlightEl.style.outline = '';\n highlightEl.style.animation = '';\n }, 3000);\n }\n break;\n\n case 'ANNOTATE_ELEMENT':\n const annotateEl = document.querySelector(target);\n if (annotateEl && content) {\n const rect = annotateEl.getBoundingClientRect();\n const tooltip = document.createElement('div');\n tooltip.className = 'teacher-annotation';\n tooltip.style.cssText =\n 'position:fixed; top:' + (rect.top - 40) + 'px; left:' + rect.left +\n 'px; background:rgba(124,58,237,0.95); color:white; padding:8px 12px; border-radius:8px; font-size:14px; z-index:1000; animation:fadeIn 0.3s;';\n tooltip.textContent = content;\n document.body.appendChild(tooltip);\n setTimeout(() => tooltip.remove(), 4000);\n }\n break;\n\n case 'REVEAL_ELEMENT':\n const revealEl = document.querySelector(target);\n if (revealEl) {\n revealEl.style.display = '';\n revealEl.style.opacity = '1';\n if (revealEl.id === 'solution' || revealEl.classList.contains(\n 'solution-section')) {\n revealEl.classList.add('visible');\n }\n }\n break;\n\n default:\n // 忽略未知类型\n break;\n }\n });\n\n // 添加 pulse-highlight 和 fadeIn 关键帧动画\n const styleEl = document.createElement('style');\n styleEl.textContent =\n '@keyframes pulse-highlight { 0%, 100% { outline-color: rgba(124, 58, 237, 0.8); } 50% { outline-color: rgba(124, 58, 237, 0.3); } } @keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }';\n document.head.appendChild(styleEl);\n\n // ==========================================\n // 事件绑定\n // ==========================================\n document.addEventListener('DOMContentLoaded', function() {\n initEditor();\n initPyodide();\n\n document.getElementById('run-btn').addEventListener('click', runCode);\n document.getElementById('hint-btn').addEventListener('click', showNextHint);\n document.getElementById('reset-btn').addEventListener('click', resetCode);\n\n // 测试用例折叠/展开\n const testToggle = document.getElementById('test-toggle');\n const testResults = document.getElementById('test-results');\n testToggle.addEventListener('click', function() {\n const isCollapsed = testToggle.classList.toggle('collapsed');\n if (isCollapsed) {\n testResults.style.display = 'none';\n } else {\n testResults.style.display = '';\n }\n });\n\n // 在参考解答 section 中加载 solution 内容\n const solutionEl = document.getElementById('solution');\n if (solutionEl && widgetConfig.solution) {\n document.getElementById('solution-code').textContent = widgetConfig.solution;\n }\n\n // 窗口大小变化时刷新编辑器\n window.addEventListener('resize', function() {\n if (editor) editor.refresh();\n });\n });\n\n // 确保在 Pyodide 脚本加载完成后初始化\n // 由于脚本是同步加载的，这里直接初始化\n // 但如果 Pyodide CDN 尚未加载完成，loadPyodide 会在 initPyodide 中处理\n </script>\n</body>\n</html>",
|
||
"widgetType": "code"
|
||
}
|
||
},
|
||
{
|
||
"id": "scene_nyqpYDSNXz",
|
||
"stageId": "DZynj92UuU",
|
||
"title": "课程总结测验",
|
||
"order": 10,
|
||
"actions": [
|
||
{
|
||
"id": "action_Hgob6KaW",
|
||
"type": "speech",
|
||
"text": "现在来做课程总结小测验，看看这节课的内容掌握得怎么样。请独立尝试每一道题，提交后我会和你一起逐题回顾分析。"
|
||
}
|
||
],
|
||
"outlineId": "scene_10",
|
||
"createdAt": 1786856253251,
|
||
"updatedAt": 1786856253251,
|
||
"type": "quiz",
|
||
"content": {
|
||
"type": "quiz",
|
||
"questions": [
|
||
{
|
||
"id": "q1",
|
||
"type": "single",
|
||
"question": "在Python中，以下哪个数据类型最适合用来存储一个学生的姓名和对应的年龄信息？",
|
||
"options": [
|
||
{
|
||
"value": "A",
|
||
"label": "列表（list）"
|
||
},
|
||
{
|
||
"value": "B",
|
||
"label": "元组（tuple）"
|
||
},
|
||
{
|
||
"value": "C",
|
||
"label": "字典（dict）"
|
||
},
|
||
{
|
||
"value": "D",
|
||
"label": "集合（set）"
|
||
}
|
||
],
|
||
"answer": [
|
||
"C"
|
||
],
|
||
"analysis": "字典（dict）以键值对形式存储数据，适合存储姓名和年龄这种一一对应的信息。列表和元组只能按顺序存储多个值，集合不能存储键值对。",
|
||
"points": 10,
|
||
"hasAnswer": true
|
||
},
|
||
{
|
||
"id": "q2",
|
||
"type": "single",
|
||
"question": "运行以下Python代码后，屏幕上会依次显示哪些数字？\nfor i in range(1, 4):\n print(i)",
|
||
"options": [
|
||
{
|
||
"value": "A",
|
||
"label": "1 2 3"
|
||
},
|
||
{
|
||
"value": "B",
|
||
"label": "1 2 3 4"
|
||
},
|
||
{
|
||
"value": "C",
|
||
"label": "0 1 2"
|
||
},
|
||
{
|
||
"value": "D",
|
||
"label": "2 3"
|
||
}
|
||
],
|
||
"answer": [
|
||
"A"
|
||
],
|
||
"analysis": "range(1, 4)从1开始到4之前结束，生成1、2、3。循环依次打印每个数字，所以屏幕上依次显示1、2、3。",
|
||
"points": 10,
|
||
"hasAnswer": true
|
||
},
|
||
{
|
||
"id": "q3",
|
||
"type": "multiple",
|
||
"question": "关于Python中的列表（list）和字典（dict），以下哪些说法是正确的？（多选）",
|
||
"options": [
|
||
{
|
||
"value": "A",
|
||
"label": "列表是有序的，可以通过索引访问元素"
|
||
},
|
||
{
|
||
"value": "B",
|
||
"label": "字典中的键必须是唯一的"
|
||
},
|
||
{
|
||
"value": "C",
|
||
"label": "列表只能存储数字类型的数据"
|
||
},
|
||
{
|
||
"value": "D",
|
||
"label": "字典的元素可以通过append()方法添加"
|
||
}
|
||
],
|
||
"answer": [
|
||
"A",
|
||
"B"
|
||
],
|
||
"analysis": "A正确：列表是有序的，支持索引访问。B正确：字典的键必须唯一，否则后面的会覆盖前面的。C错误：列表可以存储任意类型的数据。D错误：append()是列表的方法，字典添加键值对通常使用赋值或update()方法。",
|
||
"points": 15,
|
||
"hasAnswer": true
|
||
},
|
||
{
|
||
"id": "q4",
|
||
"type": "single",
|
||
"question": "在Python中，定义函数时需要使用哪个关键字？",
|
||
"options": [
|
||
{
|
||
"value": "A",
|
||
"label": "def"
|
||
},
|
||
{
|
||
"value": "B",
|
||
"label": "function"
|
||
},
|
||
{
|
||
"value": "C",
|
||
"label": "define"
|
||
},
|
||
{
|
||
"value": "D",
|
||
"label": "fun"
|
||
}
|
||
],
|
||
"answer": [
|
||
"A"
|
||
],
|
||
"analysis": "Python中定义函数使用def关键字，后面跟函数名和参数列表。function、define、fun都不是Python定义函数的关键字。",
|
||
"points": 10,
|
||
"hasAnswer": true
|
||
},
|
||
{
|
||
"id": "q5",
|
||
"type": "short_answer",
|
||
"question": "请用中文解释什么是函数（function），并说明在程序中使用函数的好处。最后请写出一个简单的Python函数示例（可以只写代码，也可以加上解释）。",
|
||
"commentPrompt": "评分标准：（1）正确解释函数的概念：函数是一段可重复使用的代码块，用于完成特定任务，占40%；（2）至少说出两个使用函数的好处，如复用代码、模块化、易于维护、减少重复等，占30%；（3）给出一个正确的Python函数定义示例（包含def关键字、函数名、括号、冒号、函数体），占30%。如果学生没有写出代码，但前两部分正确，可给至多70%的分。",
|
||
"analysis": "参考答案：函数是一段有名字的、可重复调用的代码块，用于完成特定任务。好处包括：避免代码重复，提高代码复用性；使程序结构清晰，易于理解和维护；便于调试和修改。示例：def greet(name):\n print('你好, ' + name)\n调用greet('小明')会输出'你好, 小明'。",
|
||
"points": 20,
|
||
"hasAnswer": false
|
||
}
|
||
]
|
||
}
|
||
}
|
||
],
|
||
"createdAt": "2026-08-16T04:57:33.260Z"
|
||
}
|