This is a sample fast api code

fastapi-sample-main.py

from fastapi import FastAPI
from url_shortener import router

# Create the app
app = FastAPI()

@app.get("/")
def read_root():
    return {"Hello": "World"}

@app.get("/items/{item_id}")
def read_item(item_id: int):
    return {"item_id": item_id}