{ "cells": [ { "cell_type": "markdown", "metadata": {}, "source": [ "# 作业任务\n", "\n", "本作业共六个任务，围绕 `scores.txt` 文件和文件夹的创建、读取、信息获取、删除等操作。" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "## 01. 创建 scores.txt 并写入成绩信息" ] }, { "cell_type": "code", "execution_count": 1, "metadata": {}, "outputs": [ { "name": "stdout", "output_type": "stream", "text": [ "scores.txt 文件创建成功，内容如下：\n", "姓名\t语文\t数学\t英语\n", "张三\t85\t76\t91\n", "李四\t89\t92\t96\n", "王五\t72\t84\t88\n", "\n" ] } ], "source": [ "# 任务 1：创建 scores.txt 文本文件，并写入成绩信息\n", "content = \"姓名\\t语文\\t数学\\t英语\\n\" \\\n", " \"张三\\t85\\t76\\t91\\n\" \\\n", " \"李四\\t89\\t92\\t96\\n\" \\\n", " \"王五\\t72\\t84\\t88\\n\"\n", "\n", "with open('scores.txt', 'w', encoding='utf-8') as f:\n", " f.write(content)\n", "\n", "print('scores.txt 文件创建成功，内容如下：')\n", "with open('scores.txt', 'r', encoding='utf-8') as f:\n", " print(f.read())" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "## 02. 读取 scores.txt 并计算平均成绩" ] }, { "cell_type": "code", "execution_count": 2, "metadata": {}, "outputs": [ { "name": "stdout", "output_type": "stream", "text": [ "每个人的平均成绩：\n", "张三 的平均成绩为：84.00\n", "李四 的平均成绩为：92.33\n", "王五 的平均成绩为：81.33\n", "\n", "每个科目的平均成绩：\n", "语文 的平均成绩为：82.00\n", "数学 的平均成绩为：84.00\n", "英语 的平均成绩为：91.67\n" ] } ], "source": [ "# 任务 2：读取 scores.txt，分别计算每个人的平均成绩和每个科目的平均成绩\n", "with open('scores.txt', 'r', encoding='utf-8') as f:\n", " lines = f.readlines()\n", "\n", "# 去掉换行符并按制表符拆分\n", "header = lines[0].strip().split('\\t') # ['姓名', '语文', '数学', '英语']\n", "data = [line.strip().split('\\t') for line in lines[1:] if line.strip()]\n", "\n", "# 每个人的平均成绩\n", "print('每个人的平均成绩：')\n", "for row in data:\n", " name = row[0]\n", " scores = [int(x) for x in row[1:]]\n", " avg = sum(scores) / len(scores)\n", " print(f'{name} 的平均成绩为：{avg:.2f}')\n", "\n", "# 每个科目的平均成绩\n", "print('\\n每个科目的平均成绩：')\n", "subjects = header[1:]\n", "for i, subject in enumerate(subjects):\n", " col = [int(row[i + 1]) for row in data]\n", " avg = sum(col) / len(col)\n", " print(f'{subject} 的平均成绩为：{avg:.2f}')" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "## 03. 输出 scores.txt 的文件信息" ] }, { "cell_type": "code", "execution_count": 3, "metadata": {}, "outputs": [ { "name": "stdout", "output_type": "stream", "text": [ "文件名：scores.txt\n", "文件大小：80 字节\n", "文件创建时间：2026-04-17 12:16:00\n", "文件修改时间：2026-04-17 12:16:00\n", "文件最后访问时间：2026-04-17 12:16:01\n" ] } ], "source": [ "# 任务 3：输出 scores.txt 的文件大小、创建时间、修改时间、最后访问时间\n", "import os\n", "import time\n", "\n", "file_path = 'scores.txt'\n", "stat_info = os.stat(file_path)\n", "\n", "print(f'文件名：{file_path}')\n", "print(f'文件大小：{stat_info.st_size} 字节')\n", "print(f'文件创建时间：{time.strftime(\"%Y-%m-%d %H:%M:%S\", time.localtime(stat_info.st_ctime))}')\n", "print(f'文件修改时间：{time.strftime(\"%Y-%m-%d %H:%M:%S\", time.localtime(stat_info.st_mtime))}')\n", "print(f'文件最后访问时间：{time.strftime(\"%Y-%m-%d %H:%M:%S\", time.localtime(stat_info.st_atime))}')" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "## 04. 输出文件真实路径、所在目录，并删除文件" ] }, { "cell_type": "code", "execution_count": 4, "metadata": {}, "outputs": [ { "name": "stdout", "output_type": "stream", "text": [ "scores.txt 的真实路径为：E:\\py\\代码\\scores.txt\n", "scores.txt 所在的目录为：E:\\py\\代码\n", "E:\\py\\代码\\scores.txt 是一个文件，已删除。\n", "删除后文件是否存在：False\n" ] } ], "source": [ "# 任务 4：输出 scores.txt 的真实路径和所在目录，判断其是否为文件，是则删除\n", "import os\n", "\n", "file_path = 'scores.txt'\n", "real_path = os.path.realpath(file_path)\n", "print(f'scores.txt 的真实路径为：{real_path}')\n", "\n", "dir_path = os.path.dirname(real_path)\n", "print(f'scores.txt 所在的目录为：{dir_path}')\n", "\n", "if os.path.isfile(real_path):\n", " os.remove(real_path)\n", " print(f'{real_path} 是一个文件，已删除。')\n", "else:\n", " print(f'{real_path} 不是一个文件。')\n", "\n", "# 验证是否删除成功\n", "print(f'删除后文件是否存在：{os.path.exists(real_path)}')" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "## 05. 新建 Python 文件夹并重命名为 Python123" ] }, { "cell_type": "code", "execution_count": 5, "metadata": {}, "outputs": [ { "name": "stdout", "output_type": "stream", "text": [ "已创建文件夹：Python\n", "已将文件夹 Python 重命名为 Python123\n", "当前文件夹下 Python123 是否存在：True\n" ] } ], "source": [ "# 任务 5：在当前文件夹下新建 Python 文件夹，并重命名为 Python123\n", "import os\n", "\n", "old_name = 'Python'\n", "new_name = 'Python123'\n", "\n", "# 若已存在同名文件夹先清理，避免重复创建报错\n", "if os.path.exists(old_name):\n", " os.rmdir(old_name)\n", "if os.path.exists(new_name):\n", " os.rmdir(new_name)\n", "\n", "os.mkdir(old_name)\n", "print(f'已创建文件夹：{old_name}')\n", "\n", "os.rename(old_name, new_name)\n", "print(f'已将文件夹 {old_name} 重命名为 {new_name}')\n", "\n", "print(f'当前文件夹下 {new_name} 是否存在：{os.path.exists(new_name)}')" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "## 06. 判断 Python123 是否为空文件夹并删除" ] }, { "cell_type": "code", "execution_count": 6, "metadata": {}, "outputs": [ { "name": "stdout", "output_type": "stream", "text": [ "Python123 是一个空文件夹，已删除。\n", "删除后文件夹是否存在：False\n" ] } ], "source": [ "# 任务 6：判断 Python123 是否为空文件夹，是则删除\n", "import os\n", "\n", "folder = 'Python123'\n", "\n", "if os.path.isdir(folder):\n", " if len(os.listdir(folder)) == 0:\n", " os.rmdir(folder)\n", " print(f'{folder} 是一个空文件夹，已删除。')\n", " else:\n", " print(f'{folder} 不是空文件夹，未删除。')\n", "else:\n", " print(f'{folder} 文件夹不存在。')\n", "\n", "# 验证是否删除成功\n", "print(f'删除后文件夹是否存在：{os.path.exists(folder)}')" ] } ], "metadata": { "kernelspec": { "display_name": "Python 3 (ipykernel)", "language": "python", "name": "python3" }, "language_info": { "codemirror_mode": { "name": "ipython", "version": 3 }, "file_extension": ".py", "mimetype": "text/x-python", "name": "python", "nbconvert_exporter": "python", "pygments_lexer": "ipython3", "version": "3.13.9" } }, "nbformat": 4, "nbformat_minor": 4 }