⚡ Live Sandbox: AI Dev Tool: FastAPI Pydantic v2 (ei03)

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```python
# AI Dev Tool: FastAPI Pydantic v2 Micro-SaaS Boilerplate
# ===============================================
# A production-ready starter boilerplate for building micro-SaaS applications
# using FastAPI, Pydantic v2, and PostgreSQL Vector Search Extension.

from fastapi import FastAPI, HTTPException
from pydantic import BaseModel
from typing import List, Optional
import psycopg2
from psycopg2 import Error
import uvicorn

# Initialize the FastAPI application
app = FastAPI()

# Define the PostgreSQL database connection settings
DB_HOST = "localhost"
DB_NAME = "mydatabase"
DB_USER = "myuser"
DB_PASSWORD = "mypassword"

# Define the Pydantic model for the user data
class User(BaseModel):
    id: int
    name: str
    email: str

# Define the Pydantic model for the search query
class SearchQuery(BaseModel):
    query: str

# Define the route for creating a new user
@app.post("/users/")
async def create_user(user: User):
    """
    Create a new user in the database.

Args:
    user (User): The user data to be created.

Returns:
    User: The created user data.

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