excel-regex-clean

excel-regex-clean is a skill for Claude Code, Codex from YuYY2004/excel-skills. It costs 178 tokens per session (2,733 once invoked), scanned A, original, MIT.

A tool for cleaning Excel column values with regular expressions, which are patterns used to find text.

In plain words
What is it for?
Use it to keep text inside brackets, remove numbers or spaces, replace text, or apply another specified pattern to a column.
Why use it?
It removes, extracts, or replaces matching parts in bulk instead of requiring manual edits across many cells.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to keep text inside brackets, remove numbers or spaces, replace text, or apply another specified pattern to a column.

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Install with agentmods
npx agentmods add skills/yuyy2004/excel-skills/excel-regex-clean
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add YuYY2004/excel-skills --skill excel-regex-clean
Clone the repo
git clone --depth 1 https://github.com/YuYY2004/excel-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for excel-regex-clean

README.md
[![agentmods](https://agentmods.dev/badge/skills/yuyy2004/excel-skills/excel-regex-clean/github.svg)](https://agentmods.dev/skills/yuyy2004/excel-skills/excel-regex-clean)
Your own site
<a href="https://agentmods.dev/skills/yuyy2004/excel-skills/excel-regex-clean"><img src="https://agentmods.dev/badge/skills/yuyy2004/excel-skills/excel-regex-clean/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for excel-regex-clean

Your own site · 80×15
<a href="https://agentmods.dev/skills/yuyy2004/excel-skills/excel-regex-clean"><img src="https://agentmods.dev/badge/skills/yuyy2004/excel-skills/excel-regex-clean.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 178 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,733 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00178 $0.02733
Opus 5 $0.00089 $0.01367
Sonnet 5 $0.00036 $0.00547
Haiku 4.5 $0.00018 $0.00273

Measured 11d ago against content hash 4a15b1a37920, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

excel-regex-clean scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

claude/skills/excel-regex-clean/SKILL.md · 258 lines

How it starts

The opening of the file, as written. The whole thing — 258 lines — stays where its author put it; the contents beside it link to each section on GitHub.

This skill follows [[excel-safe-workflow]]. Regex processing uses Python re module. Large files (>10MB) use XML direct ops on sheet XML (4x faster), small files use openpyxl. 本技能遵循 [[excel-safe-workflow]]。正则处理用 Python re 模块。大文件(>10MB)用 XML 直接操作 sheet XML(快 4 倍),小文件用 openpyxl。

Excel Regex Clean / Excel 正则清理

Three Modes / 三种模式

模式 用户说 正则怎么写 效果
extract "只保留括号里的""提取中文部分" 用捕获组 () 圈出要保留的 1.1 (新一代)新一代
remove "删掉所有数字和点""去掉空格" 匹配要删除的部分 1.1 新一代新一代
replace "把空格换成下划线""把CN改成中国" 匹配→替换 新一代 产业新一代_产业

第零步:需求解析

用户说 解析
"删掉新兴产业列的数字、点和括号,只留中文" extract模式, 提取括号内中文
"把申请日里的横线去掉" remove模式, 删掉 -
"把空格全部换成下划线" replace模式, _
"去掉所有数字" remove模式, \d+
"只保留英文字母" extract模式, [A-Za-z]+

常用正则速查 / Common Regex Quick Reference

要匹配 正则
数字 \d+
英文点 \.
括号及内容 \([^)]*\)
括号里的内容(提取用) \((.+)\)
中文 [一-龥]+
空格 \s+
英文字母 [A-Za-z]+

第一步:勘察

import pandas as pd, re

FILE = '目标文件.xlsx'
TARGET_COL = '列名'

df = pd.read_excel(FILE)
vc = df[TARGET_COL].value_counts()
print(f'列 [{TARGET_COL}] 唯一值: {len(vc)}')

# 展示前20行 + 变换预览
MODE = 'extract'       # extract / remove / replace
PATTERN = r'\((.+)\)'  # 正则
REPLACE = ''           # replace 模式时的替换文本

print('\n变换预览:')
count = 0
for idx, val in df[TARGET_COL].items():
    if pd.notna(val) and count < 20:
        old = str(val)
        if MODE == 'extract':
            m = re.search(PATTERN, old)
            new = m.group(1) if m else old
        elif MODE == 'remove':
            new = re.sub(PATTERN, '', old)
        else:  # replace
            new = re.sub(PATTERN, REPLACE, old)

        if new != old:
            print(f'  {old[:60]}  →  {new[:60]}')
            count += 1

第二步:规划

  • 确认模式和正则,预览无误后执行
  • 正则不会的让用户直接描述需求,自动推断

第三步:执行

⚠️ XML 方案必须在 sheet 层 + 列号限定,不碰 sharedStrings。

Read the full file on GitHub · 258 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 11d ago First seen · 258 lines · 178 tokens per session scan A 4a15b1a37920

Subscribe to this mod's changes

excel-regex-clean is a skill published in the GitHub repository YuYY2004/excel-skills (2 stars, last pushed 2mo ago), licensed MIT. It adds 178 tokens to every session and 2,733 once invoked, about $0.0009 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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