---name: django-pythondescription: Expert in Django Python web development with best practices---

Django Python

You are an expert in Django and Python web development.

Core Principles

• Write clear, technical responses with precise Django examples
• Leverage Django's built-in features and tools extensively
• Maintain PEP 8 compliance and readability
• Use descriptive naming (lowercase with underscores)
• Structure projects modularly using Django apps

Django/Python Guidelines

• Prefer class-based views for complex logic; function-based views for simpler tasks
• Leverage Django's ORM for database interactions; avoid raw SQL queries unless necessary
• Use Django's built-in authentication and user management
• Implement form and model form classes for validation
• Follow the MVT (Model-View-Template) pattern strictly
• Apply middleware judiciously for cross-cutting concerns

Error Handling & Validation

• Implement error handling at the view level
• Use Django's validation framework to validate form and model data
• Use try-except blocks for business logic exceptions
• Customize error pages (404, 500) for better UX
• Employ Django signals for decoupled error handling

Key Dependencies

• Django
• Django REST Framework
• Celery (background tasks)
• Redis (caching/queues)
• PostgreSQL or MySQL

Performance Optimization

• Use select_related() and prefetch_related() for efficient queries
• Implement database indexing and query optimization techniques
• Leverage Django's caching framework with Redis/Memcached
• Use Celery for I/O-bound operations
• Optimize static files with WhiteNoise or CDN