<a href="https://typer.tiangolo.com" target="_blank"><img src="https://typer.tiangolo.com/img/logo-margin/logo-margin-vector.svg" style="width: 20%;"></a>

Ha egy olyan CLI alkalmazást fejlesztesz amit a parancssorban kell használni webes API helyett, tekintsd meg: <a href="https://typer.tiangolo.com/" class="external-link" target="_blank">**Typer**</a>.

**Typer** a FastAPI kistestvére. A **CLI-k FastAPI-ja**. ⌨️ 🚀

## Követelmények

Adoro ouvir sobre como o **FastAPI** é usado, o que você gosta nele, em qual projeto/empresa está sendo usado, etc.

## Vote no FastAPI

* <a href="https://www.slant.co/options/34241/~fastapi-review" class="external-link" target="_blank">Vote no **FastAPI** no Slant</a>.

```

</div>

<details markdown="1">
<summary>Sobre o comando <code>fastapi dev main.py</code>...</summary>

O comando `fastapi dev` lê o seu arquivo `main.py`, identifica o aplicativo **FastAPI** nele, e inicia um servidor usando o <a href="https://www.uvicorn.org" class="external-link" target="_blank">Uvicorn</a>.

Por padrão, o `fastapi dev` iniciará com *auto-reload* habilitado para desenvolvimento local.

At the same point, you try to trigger the autocomplete with `Ctrl+Space` and you see:

<img src="/img/python-types/image02.png">

With that, you can scroll, seeing the options, until you find the one that "rings a bell":

<img src="/img/python-types/image03.png">

## More motivation { #more-motivation }

Check this function, it already has type hints:

{* ../../docs_src/python_types/tutorial003.py hl[1] *}

    return {"item_id": item_id, "q": q}
```

**Nota**:

e vuoi approfondire, consulta la sezione  _"In a hurry?"_ su <a href="https://fastapi.tiangolo.com/async/#in-a-hurry" target="_blank">`async` e `await` nella documentazione</a>.

</details>

### Esegui il server

Puoi far partire il server così:

<div class="termy">

```console
$ uvicorn main:app --reload

## In a hurry? { #in-a-hurry }

<abbr title="too long; didn't read"><strong>TL;DR:</strong></abbr>

If you are using third party libraries that tell you to call them with `await`, like:

```Python
results = await some_library()
```

Then, declare your *path operation functions* with `async def` like:

```Python hl_lines="2"
@app.get('/')

*   Fixes a null pointer dereference in `CompressElement`
    ([CVE-2021-37637](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-37637))
*   Fixes a null pointer dereference in `RaggedTensorToTensor`
    ([CVE-2021-37638](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-37638))
*   Fixes a null pointer dereference and a heap OOB read arising from operations

        });
    }

    @Test
    @DisplayName("Test null data handling")
    public void testNullDataHandling() {
        assertThrows(CIFSException.class, () -> {
            compressionService.compress(null, CompressionService.COMPRESSION_LZ77);
        });

        assertThrows(CIFSException.class, () -> {
            compressionService.decompress(null, CompressionService.COMPRESSION_LZ77);
        });
    }

    public boolean chain(final ServerMessageBlock2 n) {
        if (this.next != null) {
            return this.next.chain(n);
        }

        n.addFlags(SMB2_FLAGS_RELATED_OPERATIONS);
        this.next = n;
        return true;
    }

    /**
     * Gets the next message in the compound chain.
     *
     * @return the next message or null if this is the last message
     */

Dans les versions précédentes de Javascript NodeJS / Navigateur, vous auriez utilisé des "callbacks". Menant potentiellement à ce que l'on appelle le "callback hell".


## Coroutines