⚡ Live Sandbox: AI Dev Tool: FastAPI Pydantic v2 (bfdd)

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```python
# AI Dev Tool: FastAPI Pydantic v2 Micro-SaaS Boilerplate
# ======================================================

"""
This is a production-ready FastAPI Pydantic v2 Micro-SaaS boilerplate.
It includes a basic setup for a FastAPI application with Pydantic v2 models,
as well as a simple example of a micro-SaaS service.
"""

# Import required libraries
from fastapi import FastAPI, Depends
from pydantic import BaseModel
from typing import List
from sqlalchemy import create_engine
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker
from sqlalchemy import Column, Integer, String

# Define the FastAPI application
app = FastAPI()

# Define the database connection
SQLALCHEMY_DATABASE_URL = "sqlite:///example.db"
engine = create_engine(SQLALCHEMY_DATABASE_URL)
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
Base = declarative_base()

# Define the Pydantic v2 models
class User(BaseModel):
    """User model"""
    id: int
    name: str
    email: str

class Item(BaseModel):
    """Item model"""
    id: int
    title: str
    description:

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