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Sn Da Large File Analysis

Sn Da Large File Analysis is an agent skill (a SKILL.md file) from OpenSenseNova/SenseNova-Skills. 万行以上 Excel 数据集的高性能分析引擎。提供 openpyxl readonly 流式读取（iterrows 支持 10 万行以上）、Parquet 转换加速、内存优化、分块处理和大文件写入模式。遇到以下任一情况就主动使用本 skill：①数据行数 ≥ 10k（由 sn-da-excel-workflow 的行数评估步骤触发）；②用户出现触发词：大文件 / 大数据量 / 性能优化 /. It works with Claude Code and has 5,743 GitHub stars across a repository of 4 listed skills.

github.com/OpenSenseNova/SenseNova-Skills/skills/sn-da-large-file-analysis (opens in a new tab)

View on GitHub (opens in a new tab)

Add this skill

Claude

Claude Code loads skills from ~/.claude/skills/ (all projects) or .claude/skills/ (one project):

git clone --depth 1 https://github.com/OpenSenseNova/SenseNova-Skills.git
cp -r SenseNova-Skills/skills/sn-da-large-file-analysis ~/.claude/skills/sn-da-large-file-analysis   # personal, or .claude/skills in a project

In the Claude apps, zip the sn-da-large-file-analysis folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).

ChatGPT / Codex

Codex reads skills from .agents/skills/ in a repo or ~/.agents/skills/ for every project:

git clone --depth 1 https://github.com/OpenSenseNova/SenseNova-Skills.git
cp -r SenseNova-Skills/skills/sn-da-large-file-analysis .agents/skills/sn-da-large-file-analysis   # repo; ~/.agents/skills for all projects

Standalone skills also load in the ChatGPT desktop app.

Cursor

Cursor loads skills from .cursor/skills/ (or ~/.cursor/skills/) and also reads .claude/skills/:

git clone --depth 1 https://github.com/OpenSenseNova/SenseNova-Skills.git
cp -r SenseNova-Skills/skills/sn-da-large-file-analysis .cursor/skills/sn-da-large-file-analysis   # project; ~/.cursor/skills for all projects

Source (checked Oct 7, 2026): code.claude.com/docs/en/skills (opens in a new tab), support.claude.com/en/articles/12512180-using-skills-in-claude (opens in a new tab), learn.chatgpt.com/docs/build-skills (opens in a new tab), cursor.com/docs/context/skills (opens in a new tab)

What this skill does

万行以上 Excel 数据集的高性能分析引擎。提供 openpyxl readonly 流式读取（iterrows 支持 10 万行以上）、Parquet 转换加速、内存优化、分块处理和大文件写入模式。遇到以下任一情况就主动使用本 skill：①数据行数 ≥ 10k（由 sn-da-excel-workflow 的行数评估步骤触发）；②用户出现触发词：大文件 / 大数据量 / 性能优化 / 内存不足 / OOM / 百万行 / 十万行 / 流式读取 / Parquet / 分块处理 / large file / big data / streaming read / chunked processing；③直接使用 pd.read_excel() 导致超时或内存溢出；④用户明确要求对大规模数据集进行高性能处理。仅不用于：小于 10k 行的常规 Excel 分析（使用 sn-da-excel-workflow 即可）。 When total rows >= 10,000, you MUST use the methods in this skill.

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4 skills are listed from this repository.

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FAQ

Sn Da Large File Analysis FAQ

Still curious? Email info@appsgit.com.

What is the Sn Da Large File Analysis skill?

Sn Da Large File Analysis is an agent skill (a SKILL.md file) from OpenSenseNova/SenseNova-Skills. 万行以上 Excel 数据集的高性能分析引擎。提供 openpyxl readonly 流式读取（iterrows 支持 10 万行以上）、Parquet 转换加速、内存优化、分块处理和大文件写入模式。遇到以下任一情况就主动使用本 skill：①数据行数 ≥ 10k（由 sn-da-excel-workflow 的行数评估步骤触发）；②用户出现触发词：大文件 / 大数据量 / 性能优化 /. It works with Claude Code and has 5,743 GitHub stars across a repository of 4 listed skills. Its SKILL.md lives at github.com/OpenSenseNova/SenseNova-Skills/skills/sn-da-large-file-analysis.

How do I install the Sn Da Large File Analysis skill?

Copy the sn-da-large-file-analysis folder (the one containing SKILL.md) into ~/.claude/skills/ for Claude Code, .agents/skills/ for Codex or .cursor/skills/ for Cursor. The agent picks it up automatically when a task matches its description.

Is the Sn Da Large File Analysis skill free?

Yes. The repository is open source under the MIT license.

Is Sn Da Large File Analysis maintained?

The repository's most recent commit was on Sep 17, 2026. appsgit only lists skills from repositories with a commit in the last six months.