使用FastAPI构建库存系统的目录结构

stock-system/│├── app/│   ├── __init__.py│   ├── main.py                     # Entry point of the FastAPI app│   ├── api/                        # API related code (routers)│   │   ├── __init__.py│   │   ├── products.py              # Routes related to products│   │   ├── inventory.py             # Routes related to inventory management│   │   ├── sales.py                 # Routes related to sales and orders│   │   └── users.py                 # Routes related to user management│   ││   ├── core/                       # Core settings and configurations│   │   ├── __init__.py│   │   ├── config.py                # Configuration settings (DB, API keys, etc.)│   │   └── security.py              # Authentication, Authorization, and Security utilities│   ││   ├── crud/                       # CRUD operations for database interactions│   │   ├── __init__.py│   │   ├── crud_product.py          # CRUD operations related to products│   │   ├── crud_inventory.py        # CRUD operations related to inventory│   │   ├── crud_sales.py            # CRUD operations related to sales│   │   └── crud_user.py             # CRUD operations related to users│   ││   ├── db/                         # Database-related modules│   │   ├── __init__.py│   │   ├── base.py                  # SQLAlchemy base for models│   │   ├── session.py               # Database session creation│   │   └── models/                  # SQLAlchemy models│   │       ├── __init__.py│   │       ├── product.py           # Product model│   │       ├── inventory.py         # Inventory model│   │       ├── sales.py             # Sales/Orders model│   │       └── user.py              # User model│   ││   ├── schemas/                    # Pydantic schemas for request/response models│   │   ├── __init__.py│   │   ├── product.py               # Product-related schemas│   │   ├── inventory.py             # Inventory-related schemas│   │   ├── sales.py                 # Sales-related schemas│   │   └── user.py                  # User-related schemas│   ││   ├── services/                   # Additional business logic/services│   │   ├── __init__.py│   │   ├── product_service.py       # Logic related to products│   │   ├── inventory_service.py     # Logic related to inventory│   │   ├── sales_service.py         # Logic related to sales│   │   └── user_service.py          # Logic related to users│   ││   └── utils/                      # Utility functions/helpers│       ├── __init__.py│       ├── dependencies.py          # Common dependencies for routes│       └── helpers.py               # Miscellaneous helper functions│├── tests/                          # Test cases│   ├── __init__.py│   ├── test_products.py             # Tests related to products│   ├── test_inventory.py            # Tests related to inventory│   ├── test_sales.py                # Tests related to sales/orders│   └── test_users.py                # Tests related to users│├── alembic/                        # Database migrations using Alembic (if needed)│   ├── versions/                    # Directory for migration scripts│   └── env.py                       # Alembic environment configuration│├── Dockerfile                      # Dockerfile for containerizing the application├── .env                            # Environment variables file (for secrets and config)├── .gitignore                      # Files and directories to ignore in git├── pyproject.toml                   # Dependencies and project metadata (or requirements.txt)├── README.md                       # Documentation of the project└── uvicorn_config.py               # Configuration for running the FastAPI app with Uvicorn