FastAPI - Path Parameters - int

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examples/fastapi/userid-path/main.py

from fastapi import FastAPI

app = FastAPI()


@app.get("/user/{user_id}")
async def root(user_id: int):
    return {'user': user_id}

http://localhost:8000/user/23      works
http://localhost:8000/user/foo     422 error
http://localhost:8000/user/2.3     422 error