使用FastAPI构建库存系统的目录结构

这种结构分离了关注点，使得随着项目规模的扩展更容易管理。

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

关键目录和文件：

• app/main.py：FastAPI 应用程序的入口点。它启动应用程序，包括路由器和其他配置。
• api/：包含库存系统各个方面（产品、库存、销售、用户）的路由定义。
• db/：包括 SQLAlchemy 模型、数据库会话设置和相关文件。
• crud/：通过CRUD操作处理数据库和API之间的交互。
• schemas/：定义用于验证和序列化请求和响应数据的 Pydantic 模型。
• services/：包含系统各种功能的业务逻辑。
• tests/：包含单元测试和集成测试以确保功能。
• alembic/：如果您使用 Alembic 进行数据库迁移，这就是迁移文件所在的位置。

这种结构对于库存系统来说是灵活且可扩展的，促进关注点分离，更容易测试和维护。

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