Python FastAPI Excellence

# Python FastAPI Best Practices

Master API development with FastAPI using Google Antigravity IDE. This comprehensive guide covers routing, validation, authentication, and performance optimization.

## Application Structure
```python
# app/main.py
from fastapi import FastAPI
from app.api import router
from app.core.config import settings

app = FastAPI(title=settings.PROJECT_NAME)
app.include_router(router, prefix="/api/v1")
```

## Pydantic Models
```python
class UserCreate(BaseModel):
    email: EmailStr
    password: str = Field(..., min_length=8)
```

## Best Practices
- Use Pydantic for request/response validation
- Apply dependency injection for shared logic
- Use async database sessions