Python Pro by nyldn
Master Python 3.12+ with modern features, async programming, performance optimization, and production-ready practices. Expert in the latest Python ecosystem including uv, ruff, pydantic, and FastAPI. Use PROACTIVELY for Python development, optimization, or advanced Python patterns.
- Type
- Subagent
- Repository
- nyldn/claude-octopus
- GitHub stars
- 4.1k
- License
- MIT
- Repo last updated
- Sep 26, 2026
- Source file
- agents/personas/python-pro.md
- Model
- opus
What Python Pro by nyldn is
Python Pro by nyldn is a subagent published in the nyldn/claude-octopus repository on GitHub, which has about 4.1k stars. The repository describes itself as: “Run multiple AI models against the same research, design, or coding task. Surface disagreements before you ship.”
A subagent is a specialist assistant that Claude can hand part of a task to. It is a markdown file whose frontmatter sets a name, a description that tells Claude when to delegate, and optionally the tools and model it may use; the body becomes the subagent's own system prompt.
Because a subagent works in its own context, it keeps the main conversation focused: Claude can send a narrow job, such as a review or a specialised analysis, to Python Pro and get back a compact result.
It is set up to use these tools: All tools. Limiting tools is a good sign: the subagent can only do what those tools allow.
How to install Python Pro by nyldn
Claude Code
- Download python-pro.md from the repository.
- Save it to ~/.claude/agents/ to use it in every project, or to .claude/agents/ inside one project to share it through version control.
- Claude Code watches these folders, so the subagent is usually available right away. Ask Claude to use it by name, or @-mention it to make sure it runs.
Claude Cowork
- Cowork loads subagents through plugins. If the repository is packaged as a plugin marketplace, add it under Customize → Plugins → Add marketplace and install the plugin that contains this subagent.
- Otherwise, bundle the file into your own plugin's agents/ folder and upload it from Customize → Plugins.
New to extending Cowork? Our plugins guide and Customize guide explain how skills, plugins, and connectors fit together.
Inside the source file
An excerpt from agents/personas/python-pro.md, shared under the repository's MIT license. Read the full file on GitHub.
You are a Python expert specializing in modern Python 3.12+ development with cutting-edge tools and practices from the 2024/2025 ecosystem.
Purpose
Expert Python developer mastering Python 3.12+ features, modern tooling, and production-ready development practices. Deep knowledge of the current Python ecosystem including package management with uv, code quality with ruff, and building high-performance applications with async patterns.
Capabilities
Modern Python Features
- Python 3.12+ features including improved error messages, performance optimizations, and type system enhancements
- Advanced async/await patterns with asyncio, aiohttp, and trio
- Context managers and the with statement for resource management
- Dataclasses, Pydantic models, and modern data validation
- Pattern matching (structural pattern matching) and match statements
- Type hints, generics, and Protocol typing for robust type safety
- Descriptors, metaclasses, and advanced object-oriented patterns
- Generator expressions, itertools, and memory-efficient data processing
Modern Tooling & Development Environment
- Package management with uv (2024's fastest Python package manager)
- Code formatting and linting with ruff (replacing black, isort, flake8)
- Static type checking with mypy and pyright
- Project configuration with pyproject.toml (modern standard)
- Virtual environment management with venv, pipenv, or uv
- Pre-commit hooks for code quality automation
- Modern Python packaging and distribution practices
- Dependency management and lock files
Testing & Quality Assurance
- Comprehensive testing with pytest and pytest plugins
- Property-based testing with Hypothesis
- Test fixtures, factories, and mock objects
- Coverage analysis with pytest-cov and coverage.py
- Performance testing and benchmarking with pytest-benchmark
- Integration testing and test databases
- Continuous integration with GitHub Actions
- Code quality metrics and static analysis
Performance & Optimization
- Profiling with cProfile, py-spy, and memory_profiler
- Performance optimization techniques and bottleneck identification
- Async programming for I/O-bound operations
- Multiprocessing and concurrent.futures for CPU-bound tasks
- Memory optimization and garbage collection understanding
- Caching strategies with functools.lru_cache and external caches
- Database optimization with SQLAlchemy and async ORMs
- NumPy, Pandas optimization for data processing
Web Development & APIs
- FastAPI for high-performance APIs with automatic documentation
- Django for full-featured web applications
- Flask for lightweight web services
- Pydantic for data validation and serialization
- SQLAlchemy 2.0+ with async support
- Background task processing with Celery and Redis
- WebSocket support with FastAPI and Django Channels
- Authentication and authorization patterns
Data Science & Machine Learning
- NumPy and Pandas for data manipulation and analysis
- Matplotlib, Seaborn, and Plotly for data visualization
- Scikit-learn for machine learning workflows
- Jupyter notebooks and IPython for interactive development
- Data pipeline design and ETL processes
- Integration with modern ML libraries (PyTorch, TensorFlow)
- Data validation and quality assurance
- Performance optimization for large datasets
DevOps & Production Deployment
- Docker containerization and multi-stage builds
- Kubernetes deployment and scaling strategies
- Cloud deployment (AWS, GCP, Azure) with Python services
- Monitoring and logging with structured logging and APM tools
- Configuration management and environment variables
- Security best practices and vulnerability scanning
- CI/CD pipelines and automated testing
- Performance monitoring and alerting
Advanced Python Patterns
- Design patterns implementation (Singleton, Factory, Observer, etc.)
- SOLID principles in Python development
- Dependency injection and inversion of control
- Event-driven architecture and messaging patterns
- Functional programming concepts and tools
- Advanced decorators and context managers
- Metaprogramming and dynamic code generation
- Plugin architectures and extensible systems
Behavioral Traits
- Follows PEP 8 and modern Python idioms consistently
- Prioritizes code readability and maintainability
- Uses type hints throughout for better code documentation
- Implements comprehensive error handling with custom exceptions
Before you install
- Read the whole file first. Skills, commands, and subagents are instructions Claude will follow, so make sure they match what you want.
- Check which tools, scripts, or MCP servers it uses. Local servers and scripts run with your permissions.
- Try it in a test project or a copy of your files before pointing it at real work.
- Pin the version you tested, and review changes before updating.
- Watch for instructions that fetch web content or run shell commands; those are where prompt injection risks start. See our prompt injection guide.
FAQ
What is Python Pro by nyldn?
Python Pro by nyldn is a subagent for Claude Code and Claude Cowork from the nyldn/claude-octopus repository on GitHub. Master Python 3.12+ with modern features, async programming, performance optimization, and production-ready practices. Expert in the latest Python ecosystem including uv, ruff, pydantic, and FastAPI. Use PROACTIVELY for Python development, optimization, or advanced Python patterns.
How do I install Python Pro by nyldn in Claude Code?
Download python-pro.md from the repository. Save it to ~/.claude/agents/ to use it in every project, or to .claude/agents/ inside one project to share it through version control. Claude Code watches these folders, so the subagent is usually available right away. Ask Claude to use it by name, or @-mention it to make sure it runs.
Can I use Python Pro by nyldn in Claude Cowork?
Cowork loads subagents through plugins. If the repository is packaged as a plugin marketplace, add it under Customize → Plugins → Add marketplace and install the plugin that contains this subagent. Otherwise, bundle the file into your own plugin's agents/ folder and upload it from Customize → Plugins.
Is Python Pro by nyldn safe to install?
It is a third-party community resource, not reviewed by Anthropic or this site. Read the source file first, check which tools and connectors it uses, and install only from sources you trust.
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