name: excel-large-file-processing-and-cleaning description: "读取多 sheet Excel 文件,动态识别目标列进行统计,并使用正则清洗文本字段提取中文字符,最终输出标准化 Excel 文件。"
Skill Steps
This sub-skill covers one capability of the Excel workflow. For reading/counting/Parquet optimization, see the parent workflow SKILL.md.
Step1 文本字段清洗,使用正则表达式提取纯中文字符(过滤数字、特殊符号等)。
import re
def extract_chinese(text):
if pd.isna(text):
return text
# 仅保留 Unicode 中文字符范围
chinese_chars = re.findall(r'[一-龥]', str(text))
cleaned = ''.join(chinese_chars)
return cleaned if cleaned else ''
clean_col = '目标清洗列' # 占位示例,如'收货人'
if clean_col in df.columns:
df[clean_col] = df[clean_col].apply(extract_chinese)