Apple Container Test Runner
RustPython/RustPython
Runs RustPython tests inside a Linux container built with Apple's container CLI, so macOS users can compare Linux results with their local ones.
Python package creation and PyPI distribution via pyproject.toml and entry points.
Install Python Packaging
$ npx skills add athola/claude-night-market --skill python-packaging -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install athola/claude-night-market python-packaging --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/athola/claude-night-market.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/parseltongue/skills/python-packaging .claude/skills/python-packaging && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "python-packaging" agent skill from https://github.com/athola/claude-night-market/tree/master/plugins/parseltongue/skills/python-packaging into .claude/skills/python-packaging/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "python-packaging", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/athola/claude-night-market/tree/master/plugins/parseltongue/skills/python-packagingType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add athola/claude-night-market --skill python-packaging -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install athola/claude-night-market python-packaging --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/athola/claude-night-market.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/parseltongue/skills/python-packaging .agents/skills/python-packaging && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "python-packaging" agent skill from https://github.com/athola/claude-night-market/tree/master/plugins/parseltongue/skills/python-packaging into .agents/skills/python-packaging/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "python-packaging", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add athola/claude-night-market --skill python-packaging -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install athola/claude-night-market python-packaging --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/athola/claude-night-market.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/parseltongue/skills/python-packaging .cursor/skills/python-packaging && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "python-packaging" agent skill from https://github.com/athola/claude-night-market/tree/master/plugins/parseltongue/skills/python-packaging into .cursor/skills/python-packaging/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "python-packaging", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/athola/claude-night-market.git --path plugins/parseltongue/skills/python-packaging--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add athola/claude-night-market --skill python-packaging -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install athola/claude-night-market python-packaging --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/athola/claude-night-market.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/parseltongue/skills/python-packaging .gemini/skills/python-packaging && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "python-packaging" agent skill from https://github.com/athola/claude-night-market/tree/master/plugins/parseltongue/skills/python-packaging into .gemini/skills/python-packaging/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "python-packaging", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install athola/claude-night-market python-packagingInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add athola/claude-night-market --skill python-packaging -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/athola/claude-night-market.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/parseltongue/skills/python-packaging .github/skills/python-packaging && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "python-packaging" agent skill from https://github.com/athola/claude-night-market/tree/master/plugins/parseltongue/skills/python-packaging into .github/skills/python-packaging/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "python-packaging", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add athola/claude-night-market --skill python-packaging -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install athola/claude-night-market python-packaging --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/athola/claude-night-market.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/parseltongue/skills/python-packaging .opencode/skills/python-packaging && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "python-packaging" agent skill from https://github.com/athola/claude-night-market/tree/master/plugins/parseltongue/skills/python-packaging into .opencode/skills/python-packaging/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "python-packaging", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
python-packaging- GitHub stars
- 342
- Token cost
- ~902 tokens
- SKILL.md length
- 238 words
- Files
- 5
- Skills in repo
- 159
- Repo updated
- First seen
- Licence
- MIT
At a glance
Python package creation and PyPI distribution via pyproject.toml and entry points.
- Works in 2 steps: Layout Choice → Project Structure
- Publishing a package
- SKILL.md covers Quick Start, When To Use, When NOT To Use and Core Decisions, plus 3 more sections
- Calls uv and pytest
What it does
Python Packaging is an agent skill from athola/claude-night-market. Python package creation and PyPI distribution via pyproject.toml and entry points. Use when publishing a package or setting up build configuration.
Its SKILL.md is about 900 tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files (for example `modules/ci-cd-integration.md`, `modules/entry-points.md` and `modules/pyproject-patterns.md`).
It sits in Testing & QA. It works with Python. The repository describes itself as: 23 Claude Code plugins: TDD enforcement hooks, git/PR workflows, spec-driven development, code review, project lifecycle, fix-from-error, maintenance automation, context… The licence is MIT.
When your agent uses it
- Publishing a package
- Setting up build configuration
Example prompts
- “/python-packaging”
Requirements
- Python 3
Workflow steps
2 steps, taken from the step headings in SKILL.md.
What it can do on your machine
Read from SKILL.md and the folder at commit 9f3eb00. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
uvpytest
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use uv, which can reach the network depending on how they are called.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Python Packaging loads about 902 tokens when it runs. Until then it costs about 41 tokens; SKILL.md has 238 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from athola/claude-night-market at commit 9f3eb00, republished under its MIT licence (© athola). 238 words, ~902 tokens.
Download SKILL.mdSave it as
.claude/skills/python-packaging/SKILL.md (or your agent's skills folder). This skill also uses 4 other files; get the full folder from GitHub.- name
- python-packaging
- description
- Python package creation and PyPI distribution via pyproject.toml and entry points. Use when publishing a package or setting up build configuration.
- globs
- **/*.py
- alwaysApply
- false
- category
- packaging
- tags
- python, packaging, pyproject.toml, uv, pip, pypi, distribution
- usage_patterns
- package-creation, pypi-publishing, cli-tool-development, library-distribution
- complexity
- beginner
- model_hint
- fast
- estimated_tokens
- 200
- progressive_loading
- true
- modules
- uv-workflow.md, pyproject-patterns.md, entry-points.md, ci-cd-integration.md
Python Packaging
Modern Python packaging with pyproject.toml, uv, and best practices for distribution.
Quick Start
# Create new project with uv
uv init my-package
cd my-package
# Add dependencies
uv add requests click
# Build package
uv build
# Publish to PyPI
uv publishVerification: Run the command with --help flag to verify availability.
When To Use
- Creating distributable Python libraries
- Building CLI tools
- Publishing to PyPI
- Setting up development environments
- Managing project dependencies
When NOT To Use
- Testing packages - use python-testing instead
- Optimizing package performance - use python-performance
- Testing packages - use python-testing instead
- Optimizing package performance - use python-performance
Core Decisions
1. Layout Choice
# Source layout (recommended)
src/my_package/
__init__.py
module.py
# Flat layout (simple)
my_package/
__init__.py
module.pyVerification: Run the command with --help flag to verify availability.
Source layout benefits:
- Clear separation of source and tests
- Prevents accidental imports of uninstalled code
- Better for packages with complex structure
2. Project Structure
Minimal Project:
**Verification:** Run `pytest -v` to verify tests pass.
my-project/
├── pyproject.toml
├── README.md
├── src/
│ └── my_package/
│ └── __init__.py
└── tests/
└── test_init.pyVerification: Run pytest -v to verify tests pass.
Complete Project:
**Verification:** Run the command with `--help` flag to verify availability.
my-project/
├── pyproject.toml
├── README.md
├── LICENSE
├── .gitignore
├── src/
│ └── my_package/
│ ├── __init__.py
│ ├── cli.py
│ ├── core.py
│ └── utils.py
├── tests/
│ ├── conftest.py
│ └── test_core.py
└── docs/
└── index.mdVerification: Run pytest -v to verify tests pass.
Detailed Topics
See modules for detailed information:
- uv Workflow - Complete uv commands and troubleshooting
- pyproject.toml Patterns - Configuration examples for different package types
- Entry Points - Console scripts, GUI scripts, and plugins
- CI/CD Integration - GitHub Actions and automated publishing
Best Practices
- Use source layout for anything beyond simple packages
- Pin direct dependencies with minimum versions
- Use optional dependency groups for dev/docs/test
- Include py.typed for type hint support
- Add detailed README with usage examples
- Use semantic versioning (MAJOR.MINOR.PATCH)
- Test on multiple Python versions before publishing
Exit Criteria
- Modern pyproject.toml configuration
- Clear dependency specification
- Proper version management
- Tests included and passing
- Build process reproducible
- Publishing pipeline automated
© athola, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 4 other files in plugins/parseltongue/skills/python-packaging of athola/claude-night-market.
- SKILL.md
- modules/ci-cd-integration.md
- modules/entry-points.md
- modules/pyproject-patterns.md
- modules/uv-workflow.md
Open the folder on GitHubat commit 9f3eb00
Compare with similar skills
Python Packaging next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Python Packaging this skillathola/claude-night-market | 342 | — | ~902 | Automated safety check: Pass | MIT | |
| Apple Container Test RunnerRustPython/RustPython | 22k | — | ~467 | Automated safety check: Pass | MIT | |
| RStudio Selenium to Playwright Migrationrstudio/rstudio | 5.1k | — | ~3.6k | Automated safety check: Pass | Custom licence | |
| Cloud Agents Starterscalar/scalar | 16k | — | ~1.4k | Automated safety check: Pass | MIT | |
| RustPython Test Failure InvestigationRustPython/RustPython | 22k | — | ~467 | Automated safety check: Pass | MIT | |
| Codex E2E Trace Validationliaohch3/claude-tap | 3.3k | — | ~3k | Automated safety check: Pass | MIT |
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Codex E2E Trace Validation
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Simple Modern Uv
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Start, selectively modernize, fully migrate, or update Python projects using simple-modern-uv practices: uv, ruff, BasedPyright, pytest, GitHub Actions CI, and tag-driven PyPI publishing.
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Questions about Python Packaging
What does Python Packaging do?
Python package creation and PyPI distribution via pyproject.toml and entry points. Python Packaging is an agent skill from athola/claude-night-market.toml and entry points.
When should I use Python Packaging?
Python Packaging fits situations like: publishing a package; setting up build configuration.
How do I install Python Packaging in Claude Code?
Run `npx skills add athola/claude-night-market --skill python-packaging -a claude-code`. Or copy the skill folder (plugins/parseltongue/skills/python-packaging in athola/claude-night-market) into .claude/skills/python-packaging in your project. Claude Code loads it when a task matches its description.
How do I install Python Packaging in Codex?
Run `npx skills add athola/claude-night-market --skill python-packaging -a codex`. Or copy the skill folder (plugins/parseltongue/skills/python-packaging in athola/claude-night-market) into .agents/skills/python-packaging in your project. Codex loads it when a task matches its description.
Can I use Python Packaging in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add athola/claude-night-market --skill python-packaging -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/python-packaging, .gemini/skills/python-packaging, .github/skills/python-packaging and .opencode/skills/python-packaging in your project.
What does Python Packaging need to run?
Going by SKILL.md and its folder, Python Packaging needs the command-line tools its instructions call (uv and pytest). Our summary lists: Python 3.
Does Python Packaging access the network?
SKILL.md contains no URLs. Its commands use uv, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is Python Packaging safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Python Packaging use?
Python Packaging is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Python Packaging use?
About 902 tokens (SKILL.md is roughly 3.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Python Packaging?
Skills that share tags, products or a category with Python Packaging: Apple Container Test Runner (RustPython/RustPython, 22k stars), RStudio Selenium to Playwright Migration (rstudio/rstudio, 5.1k stars), Cloud Agents Starter (scalar/scalar, 16k stars) and RustPython Test Failure Investigation (RustPython/RustPython, 22k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Python Packaging?
athola (a GitHub user) maintains it in athola/claude-night-market, which has 342 GitHub stars. The repository holds 159 skills in this directory. The repository was last updated on October 6, 2026.
Source: athola/claude-night-market on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.