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multi-file-excel-parquet-analysis

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读取多 Sheet Excel 文件并统计规模，支持大文件向 Parquet 格式转换、分类数据统计及可视化报告生成。

skills/sn-da-excel-workflow/capability/excel-reading/multi-file-reading/SKILL.md

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Nov 3, 2026
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> **Note**: This sub-skill covers one step of the Excel analysis workflow. For the full pipeline (file reading, row counting, large-file optimization, export), see the parent workflow SKILL.md.


Step1 读取 Excel 文件，遍历所有 Sheet 统计行数，评估数据规模。
```python
import pandas as pd
import os

file_path = "input_data.xlsx"  # 替换为实际文件路径

if not os.path.exists(file_path):
    print(f"Error: 文件 {file_path} 不存在")
else:
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