Basic FastAPI app

simple_app.py

# Run using `uvicorn simple_app:app --reload`
# Visit 127.0.0.1:8000/docs for documentation and testing the API
from fastapi import FastAPI, Query

app = FastAPI(
    title="FastAPI Example",
    description="### Hello world",
    version=1.0,
)


@app.get("/echo/", tags=["APIs"], response_model=str)
def echo(input_value: str = Query(..., max_length=20)):
    return input_value