PyScript Cursor Rule: Project Setup and Environment Configuration
This rule configures Cursor IDE for optimal PyScript development by setting up proper file associations, syntax highlighting, autocompletion, and project structure recognition for Python-in-browser projects.
# PyScript Cursor Rule: Project Setup and Environment Configuration
## Purpose
This rule configures Cursor IDE for optimal PyScript development by setting up proper file associations, syntax highlighting, autocompletion, and project structure recognition for Python-in-browser projects.
## .cursorrules Content
```
# PyScript Project Setup Configuration
## File Associations and Recognition
- Recognize .py files in web projects as PyScript when accompanied by HTML files containing py-script tags
- Associate .html files with PyScript syntax highlighting when containing <py-script> or <py-terminal> tags
- Treat .toml files as PyScript configuration when named pyscript.toml or py-script.toml
## PyScript-Specific Syntax and Imports
- Enable Python syntax highlighting and IntelliSense for code within <py-script> tags in HTML
- Recognize PyScript-specific imports: js, pyodide, micropip, pyscript
- Provide autocompletion for PyScript DOM manipulation methods (Element, document, window)
- Support for PyScript configuration object properties in HTML meta tags
## Project Structure Guidelines
- Suggest standard PyScript project structure:
```
project/
├── index.html # Main HTML file with PyScript
├── main.py # Main Python application logic
├── requirements.txt # Python package dependencies
├── pyscript.toml # PyScript configuration
├── static/
│ ├── css/
│ └── js/
└── py_modules/ # Custom Python modules
```
## Development Environment Setup
- Recommend local development server for testing (avoid file:// protocol issues)
- Suggest using Python's built-in server: `python -m http.server 8000`
- Enable CORS headers awareness for PyScript package loading
- Configure live reload for HTML/Python file changes
## PyScript-Specific Code Completion
- Provide snippets for common PyScript patterns:
- Basic HTML template with PyScript CDN
- Python package installation via micropip
- DOM element selection and manipulation
- Event handling setup
- Async/await patterns for web APIs
## Error Handling and Debugging
- Recognize PyScript error patterns in browser console
- Suggest debugging techniques using pyscript.write() and console.log()
- Highlight common PyScript pitfalls (blocking operations, package compatibility)
- Provide troubleshooting for PyScript initialization errors
## Performance Optimization Hints
- Warn about synchronous operations that block the main thread
- Suggest lazy loading for large Python packages
- Recommend code splitting for complex applications
- Highlight WebAssembly optimization opportunities
## Package Management Integration
- Recognize requirements.txt for PyScript-compatible packages
- Validate package compatibility with Pyodide
- Suggest alternatives for packages not available in PyScript
- Provide warnings for packages that may cause performance issues
```
## Benefits
- **Seamless Development**: Proper syntax highlighting and autocompletion for PyScript code
- **Project Organization**: Standardized structure for maintainable PyScript projects
- **Error Prevention**: Early detection of common PyScript compatibility issues
- **Performance Awareness**: Built-in suggestions for optimizing PyScript applications
- **Development Efficiency**: Quick setup with proper tooling configuration
## Use Cases
- **New PyScript Projects**: Setting up a fresh PyScript development environment
- **Team Collaboration**: Ensuring consistent development setup across team members
- **Educational Projects**: Teaching Python web development with proper IDE support
- **Prototyping**: Rapid development of Python-based web applications
- **Migration Projects**: Converting existing Python scripts to run in the browser
## Important Considerations
- Ensure your local development server supports CORS for PyScript package loading
- PyScript has a startup time due to WebAssembly initialization - factor this into UX design
- Not all Python packages are compatible with PyScript/Pyodide - verify compatibility before use
- Consider using PyScript's configuration file for complex dependency management
Created: 7/13/2025
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