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excel-multi-sheet-threshold-analysis

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统计多Sheet Excel总行数并根据规模选择处理策略，提取特定维度信息进行去重统计，并生成摘要与明细报表。

skills/sn-da-excel-workflow/capability/excel-data-cleaning/duplicate-removal/SKILL.md

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# Excel_Multi_Sheet_Deduplication

> This sub-skill covers one capability of the Excel workflow. For reading/counting/Parquet optimization, see the parent workflow SKILL.md.

Step1 加载目标数据表，并进行初步的数据预览与结构检查。
```python
import pandas as pd

file_path = 'input_file.xlsx'
target_sheet = 'Sheet1' # 根据实际情况指定 sheet 名称

# 读取数据，header=None 用于处理无表头或非标准表头文件
df = pd.read_excel(file_path, sheet_name=target_sheet, header=None)
print(f"数据形状: {df.shape}")
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