diff --git a/4. Python 文件与模块.ipynb b/4. Python 文件与模块.ipynb
index 1fac39c..e15b10c 100644
--- a/4. Python 文件与模块.ipynb	
+++ b/4. Python 文件与模块.ipynb	
@@ -69,7 +69,7 @@
     "file.write(\"\"\"Hello world!\n",
     "Hello Python!!\n",
     "Hello smart way!!!\"\"\")\n",
-    "file.close()\n"
+    "file.close()"
    ]
   },
   {
@@ -307,14 +307,6 @@
     "编写模块的方式有很多，其中最简单的模块就是创建一个包含很多函数、变量以及类并以 .py 为后缀的文件。下面我们把上一节中实现的 class 类保存在 student.py 文件中："
    ]
   },
-  {
-   "cell_type": "markdown",
-   "id": "0894ce6c",
-   "metadata": {},
-   "source": [
-    "**注意！经过新一轮校对后，我们修改了 student 类的代码，下图代码已经废弃，我们同时在GitHub中提供 student.py 文件供大家参考**"
-   ]
-  },
   {
    "cell_type": "markdown",
    "id": "46b45d90",
@@ -323,6 +315,49 @@
     "<img style=\"float: center;\" src=\"./src/fig44.png\" width=\"50%\"> "
    ]
   },
+  {
+   "cell_type": "markdown",
+   "id": "575e38db",
+   "metadata": {},
+   "source": [
+    "> 为了接下来的模块引入更方便，我们也可以使用下面的代码来直接在当前目录生成 `student.py` 文件。"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "id": "bc4a2658",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "file = open('student.py', 'w',encoding=\"utf-8\")\n",
+    "file.write(\"\"\"class student():\n",
+    "    def __init__(self, name, Math_score, Chinese_score):\n",
+    "        self.name = name\n",
+    "        self.Math_score = Math_score\n",
+    "        self.Chinese_score = Chinese_score\n",
+    "    \n",
+    "    ## repr 函数用于定义对象被输出时的输出结果\n",
+    "    def __repr__(self):\n",
+    "        return str((self.name, self.Math_score, self.Chinese_score))\n",
+    "    \n",
+    "    def change_score(self, course_name, score):\n",
+    "        if course_name == 'Math':\n",
+    "            self.Math_score = score\n",
+    "        elif course_name == 'Chinese':\n",
+    "            self.Chinese_score = score\n",
+    "        else:\n",
+    "            print(course_name, \" course is still not in current system\")\n",
+    "    \n",
+    "    def print_name(self,):\n",
+    "        print(self.name)\n",
+    "    \n",
+    "    name = 'Undefined'\n",
+    "    Math_score = None\n",
+    "    Chinese_score = None\"\"\")\n",
+    "file.close()"
+   ]
+  },
   {
    "cell_type": "markdown",
    "id": "ef0e6af7",
@@ -333,7 +368,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 14,
+   "execution_count": 3,
    "id": "8de02c29",
    "metadata": {},
    "outputs": [],
@@ -343,7 +378,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 15,
+   "execution_count": 4,
    "id": "4c9f7a60",
    "metadata": {},
    "outputs": [