app = FastAPI() def index (): return { "message " "welocome to my web service" } @app.get ("/items/{item_id}") def read_item(item_id: int ,q :str_none): return { "item_id" : item_id "query_string": q } if __name__ == '__main__': uvicorn.run(app, host ="120.0.0.1" port=55000)