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wwwzhouhui avatar

Excel Report Generator

wwwzhouhui/skills_collection
368 installs258 stars
Summary

This is a solid automation tool for generating Excel reports from CSVs, databases, or pandas DataFrames using openpyxl and xlsxwriter. It handles the full workflow: data processing, multi-sheet creation, styling headers and cells, adding charts, applying conditional formatting, and even template-based fills. The implementation guide walks through actual code for common patterns like color scales, data validation dropdowns, and auto-adjusting column widths. Best for recurring business reports, data exports, or KPI dashboards where you need formatted spreadsheets without manually opening Excel. The write-only mode optimization for large datasets is a nice touch. It includes practical error handling and troubleshooting for issues like encoding problems and slow generation.

Install to Claude Code

npx -y skills add wwwzhouhui/skills_collection --skill excel-report-generator --agent claude-code

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Files
SKILL.mdView on GitHub

Excel Report Generator

自动化 Excel 报表生成工具,支持从多种数据源生成专业的 Excel 报告。

功能概述

这个 Skill 可以帮助你:

  • 📊 从 CSV、数据库或 Python 数据结构生成 Excel 报表
  • 📈 创建包含图表、格式化和公式的数据分析报告
  • 📋 基于模板填充数据生成业务报告
  • 💾 将系统数据批量导出为格式化的 Excel 文件
  • 🎨 应用专业的样式、颜色和条件格式

核心技术栈

  • pandas: 数据处理和分析
  • openpyxl: Excel 文件读写和格式化
  • xlsxwriter: 高级图表和格式支持(可选)

使用场景

1. 数据分析报表

从原始数据生成包含统计分析、透视表和可视化图表的综合报告。

示例请求:

  • "帮我从这个 CSV 生成销售分析报表"
  • "创建一个包含月度趋势图的数据分析 Excel"
  • "生成带有统计汇总的财务报表"

2. 业务报告

定期生成标准化的业务报告,如销售报告、KPI 仪表板等。

示例请求:

  • "生成本月的销售业绩报告"
  • "创建 KPI 跟踪报表"
  • "导出季度业务总结 Excel"

3. 数据导出

将数据库查询结果或系统数据导出为格式化的 Excel 文件。

示例请求:

  • "把用户数据导出到 Excel"
  • "将数据库查询结果保存为 Excel 文件"
  • "导出多个工作表的数据集"

4. 模板填充

基于预定义的 Excel 模板填充动态数据。

示例请求:

  • "使用这个模板生成报告"
  • "填充 Excel 模板中的数据"
  • "批量生成基于模板的发票"

使用方法

基本工作流程

  1. 准备数据源: CSV 文件、pandas DataFrame、数据库连接或 Python 字典
  2. 定义报表需求: 描述所需的格式、图表、样式
  3. 生成报表: 自动创建格式化的 Excel 文件
  4. 验证输出: 检查生成的文件是否符合要求

命令示例

从 CSV 生成报表:

请从 sales_data.csv 生成一个销售分析报表,包含:
- 按产品分类的销售汇总
- 月度销售趋势图
- Top 10 产品排名

从 DataFrame 生成报表:

我有一个 pandas DataFrame,帮我生成 Excel 报表,包括:
- 数据透视表
- 条件格式高亮异常值
- 自动筛选和冻结首行

使用模板:

基于 templates/monthly_report.xlsx 模板,填充当月数据并生成报告

实现指南

当用户请求生成 Excel 报表时,遵循以下步骤:

Step 1: 数据准备

import pandas as pd
from openpyxl import load_workbook
from openpyxl.styles import Font, PatternFill, Alignment
from openpyxl.utils.dataframe import dataframe_to_rows

# 读取数据
df = pd.read_csv('data.csv')
# 或从数据库
# df = pd.read_sql(query, connection)

Step 2: 数据处理

# 数据清洗和转换
df_clean = df.dropna()

# 统计分析
summary = df.groupby('category').agg({
    'sales': ['sum', 'mean', 'count'],
    'profit': 'sum'
})

Step 3: 创建 Excel 文件

# 使用 pandas ExcelWriter
with pd.ExcelWriter('output.xlsx', engine='openpyxl') as writer:
    # 写入原始数据
    df_clean.to_excel(writer, sheet_name='Raw Data', index=False)

    # 写入汇总数据
    summary.to_excel(writer, sheet_name='Summary')

    # 获取 workbook 进行格式化
    workbook = writer.book
    worksheet = writer.sheets['Summary']

Step 4: 格式化和样式

# 标题样式
header_font = Font(bold=True, color='FFFFFF')
header_fill = PatternFill(start_color='4472C4', end_color='4472C4', fill_type='solid')

# 应用样式到标题行
for cell in worksheet[1]:
    cell.font = header_font
    cell.fill = header_fill
    cell.alignment = Alignment(horizontal='center')

# 列宽自动调整
for column in worksheet.columns:
    max_length = 0
    column_letter = column[0].column_letter
    for cell in column:
        if len(str(cell.value)) > max_length:
            max_length = len(str(cell.value))
    worksheet.column_dimensions[column_letter].width = max_length + 2

Step 5: 添加图表(可选)

from openpyxl.chart import BarChart, Reference

# 创建图表
chart = BarChart()
chart.title = "Sales by Category"
chart.x_axis.title = "Category"
chart.y_axis.title = "Sales"

# 数据引用
data = Reference(worksheet, min_col=2, min_row=1, max_row=10)
categories = Reference(worksheet, min_col=1, min_row=2, max_row=10)

chart.add_data(data, titles_from_data=True)
chart.set_categories(categories)

# 添加到工作表
worksheet.add_chart(chart, "E5")

高级功能

条件格式

from openpyxl.formatting.rule import ColorScaleRule, CellIsRule

# 色阶格式
worksheet.conditional_formatting.add(
    'B2:B100',
    ColorScaleRule(start_type='min', start_color='FF6347',
                   mid_type='percentile', mid_value=50, mid_color='FFFF00',
                   end_type='max', end_color='90EE90')
)

# 基于规则的格式
red_fill = PatternFill(start_color='FFC7CE', end_color='FFC7CE', fill_type='solid')
worksheet.conditional_formatting.add(
    'C2:C100',
    CellIsRule(operator='lessThan', formula=['0'], fill=red_fill)
)

数据验证

from openpyxl.worksheet.datavalidation import DataValidation

# 下拉列表
dv = DataValidation(type="list", formula1='"优秀,良好,一般,较差"', allow_blank=True)
worksheet.add_data_validation(dv)
dv.add('D2:D100')

公式应用

# 添加求和公式
worksheet['B11'] = '=SUM(B2:B10)'

# 添加平均值公式
worksheet['C11'] = '=AVERAGE(C2:C10)'

最佳实践

1. 性能优化

  • 对于大数据集(>10万行),使用 openpyxl 的 write_only 模式
  • 分批处理数据,避免内存溢出
  • 使用 xlsxwriter 引擎处理复杂图表和格式

2. 错误处理

try:
    df = pd.read_csv('data.csv')
except FileNotFoundError:
    print("数据文件不存在")
except pd.errors.EmptyDataError:
    print("数据文件为空")

3. 文件命名规范

from datetime import datetime

# 使用时间戳避免文件覆盖
timestamp = datetime.now().strftime('%Y%m%d_%H%M%S')
filename = f'sales_report_{timestamp}.xlsx'

4. 数据验证

# 检查必需列
required_columns = ['date', 'product', 'sales']
if not all(col in df.columns for col in required_columns):
    raise ValueError(f"缺少必需列: {required_columns}")

# 数据类型验证
df['date'] = pd.to_datetime(df['date'])
df['sales'] = pd.to_numeric(df['sales'], errors='coerce')

5. 模板管理

  • 将常用模板存放在 ~/.claude/skills/excel-report-generator/templates/ 目录
  • 使用相对路径引用: templates/monthly_report.xlsx
  • 保持模板简洁,只包含结构和样式,不包含数据

快速参考

常用代码片段

查看 examples/quick_reference.py 获取常用代码片段,包括:

  • 基本 Excel 创建
  • 多工作表管理
  • 样式和格式化
  • 图表创建
  • 条件格式
  • 公式应用

示例文件

  • examples/basic_report.py - 基础报表生成示例
  • examples/advanced_report.py - 高级功能示例
  • examples/template_fill.py - 模板填充示例
  • templates/business_report.xlsx - 业务报告模板
  • templates/data_analysis.xlsx - 数据分析模板

依赖安装

确保已安装必需的 Python 包:

pip install pandas openpyxl xlsxwriter

可选依赖:

pip install matplotlib seaborn  # 用于数据可视化
pip install sqlalchemy pymysql  # 用于数据库连接

故障排查

常见问题

Q: 生成的 Excel 文件无法打开 A: 确保使用 .xlsx 扩展名,检查文件权限,验证数据中没有非法字符

Q: 图表不显示 A: 检查数据引用范围是否正确,确保数据类型为数值型

Q: 中文乱码 A: 使用 encoding='utf-8-sig' 读取 CSV,或在 Excel 中使用 UTF-8 编码

Q: 大文件生成很慢 A: 使用 write_only=True 模式,减少格式化操作,分批写入数据

相关资源

  • pandas 官方文档
  • openpyxl 官方文档
  • xlsxwriter 官方文档
  • 查看 REFERENCE.md 获取详细 API 参考

版本历史

  • v1.0.0 (2025-01-12) - 初始版本,支持基础报表生成和模板填充
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First SeenJun 3, 2026
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