return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: Union[str, None] = None):
    return {"item_id": item_id, "q": q}
```

<details markdown="1">
<summary>Albo użyj <code>async def</code>...</summary>

Jeżeli twój kod korzysta z `async` / `await`, użyj `async def`:

```Python hl_lines="9  14"
from typing import Union

from fastapi import FastAPI

akamaiorigin.net
akamaiorigin-staging.net
akamaized.net
akamaized-staging.net
edgekey.net
edgekey-staging.net
edgesuite.net
edgesuite-staging.net

// alboto.ca : http://alboto.ca
// Submitted by Anton Avramov <avramov@alboto.ca>
barsy.ca

// Alces Software Ltd : http://alces-software.com
// Submitted by Mark J. Titorenko <******@****.***>
*.compute.estate
*.alces.network

9B6F,sBAAP,SAA6BpT,GAC3B,IAAIqF,EACEpF,EAAWX,EAAKS,uBAAuBC,GAM7C,OAJIC,IACFoF,EAASxF,SAASQ,cAAcJ,IAG3BoF,GAAUrF,EAAQ+C,cAIpB+R,uBAAP,SAA8BvR,GAQ5B,IAAI,kBAAkBhB,KAAKgB,EAAMK,OAAOyD,WAlbX,KAmbzB9D,EAAMwJ,OApbmB,KAobQxJ,EAAMwJ,QAhbd,KAib1BxJ,EAAMwJ,OAlboB,KAkbYxJ,EAAMwJ,OAC3C3N,EAAEmE,EAAMK,QAAQ0B,QAAQkB,IAAe0B,SAAW2J,GAAetP,KAAKgB,EAAMwJ,UAIhFxJ,EAAM4C,iBACN5C,EAAMuQ,mBAEF5U,KAAK6T,WAAY3T,EAAEF,MAAMuG,SAASf,KAAtC,CAIA,IAAMW,EAAWoN,EAASW,sBAAsBlU,MAC1C8T,EAAW5T,EAAEiG,GAAQI,SAASf,IAEpC,GAAKsO,GApc...

2BBA..2BBC    ; valid                  ;      ; NV8    # 11.0 OVERLAPPING WHITE SQUARES..OVERLAPPING BLACK SQUARES
2BBD..2BC8    ; valid                  ;      ; NV8    # 7.0  BALLOT BOX WITH LIGHT X..BLACK MEDIUM RIGHT-POINTING TRIANGLE CENTRED
2BC9          ; valid                  ;      ; NV8    # 12.0 NEPTUNE FORM TWO