tomevault-io name: python-console-dev description: Build clean, robust command-line Python applications using Python 3.13+, in-memory CRUD, and modern project practices. Use for CLI-based tools and utilities.
Python Console Development
Instructions
Project setup
- Use Python 3.13+
- Initialize project using UV for dependency and environment management
- Follow a clear, modular project structure (
src/,tests/,pyproject.toml)
Application architecture
- Separate concerns: CLI layer, business logic, and data models
- Use in-memory data structures (lists, dicts) as the primary datastore
- Implement full CRUD operations (Create, Read, Update, Delete)
CLI interface
- Design clear commands and subcommands
- Validate all user inputs (types, ranges, required fields)
- Provide helpful error messages and usage hints
- Support interactive and non-interactive (arguments-based) usage
Code quality
- Follow PEP 8 style guidelines
- Use meaningful variable, function, and module names
- Write small, testable functions
- Add docstrings for public functions and modules
Business logic & models
- Define explicit data models (dataclasses or typed dictionaries)
- Encapsulate rules and validations in the business layer
- Avoid placing logic directly in the CLI handlers
Best Practices
- Keep CLI commands simple and predictable
- Prefer composition over deeply nested conditionals
- Fail fast on invalid input
- Use type hints throughout the codebase
- Keep the main entry point minimal
- Design for easy future migration to persistent storage
Example Structure
python-console-dev/
├── pyproject.toml
├── src/
│ └── app/
│ ├── __init__.py
│ ├── cli.py
│ ├── models.py
│ ├── service.py
│ └── repository.py
└── tests/
└── test_service.py
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