⚡ Live Sandbox: AI Dev Tool: FastAPI Pydantic v2 MicroSaaS

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```python
# AI Dev Tool: FastAPI Pydantic v2 Micro-SaaS Boilerplate with Hono Cloudflare Workers D1 Starter
# =============================================================================================
# This is a production-ready developer code asset for building fast, scalable, and secure Micro-SaaS applications.
# It combines the power of FastAPI, Pydantic v2, and Hono Cloudflare Workers D1 Starter.

from fastapi import FastAPI, Depends
from pydantic import BaseModel
from typing import Optional
from hono import Hono
import cloudflare

# Initialize the FastAPI application
app = FastAPI()

# Initialize the Hono Cloudflare Workers D1 Starter
hono = Hono()

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

# Define a route for getting user data
@app.get("/users/{user_id}")
async def get_user(user_id: int, user_data: Optional[UserData] = Depends()):
    """
    Get user data by ID.

Args:
        user_id (int): The ID of the user.
        user_data (Optional[UserData]): The user data. Defaults to None.

Returns:
        UserData:

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