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

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```python
# AI Dev Tool: FastAPI Pydantic v2 Micro-SaaS Boilerplate
# Description: A production-ready starter boilerplate for building micro-SaaS applications using FastAPI and Pydantic v2.
# Author: [Your Name]

from fastapi import FastAPI, HTTPException
from pydantic import BaseModel, Field
from typing import List, Optional
from fastapi.responses import JSONResponse
from fastapi.encoders import jsonable_encoder
from fastapi.middleware.cors import CORSMiddleware

# Initialize the FastAPI application
app = FastAPI(
    title="FastAPI Pydantic v2 Micro-SaaS Boilerplate",
    description="A production-ready starter boilerplate for building micro-SaaS applications",
    version="1.0.0",
)

# Enable CORS middleware
app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

# Define the Pydantic model for the user
class User(BaseModel):
    id: int = Field(..., description="The unique identifier of the user")
    name: str = Field(..., description="The name of the user")
    email: str =

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