### Crea un file

* Crea un file `main.py` con:

```Python
from fastapi import FastAPI
from typing import Optional

app = FastAPI()


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


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

<details markdown="1">

    )
    val response = client.newCall(request().build()).execute()
    val responseBody = response.body
    assertThat(responseBody.string(), "Expected response body to be valid")
      .isEqualTo("Hello, Hello, Hello")
    responseBody.close()
    networkLogs
      .assertLogEqual("--> GET $url http/1.1")
      .assertLogEqual("Host: $host")
      .assertLogEqual("Connection: Keep-Alive")

        ):
            if q:
                return f"Hello {q}"
            else:
                return "Hello World"

    client = TestClient(app)
    return client


@needs_py310
def test_no_query():
    client = get_client()
    response = client.post("/items/")
    assert response.status_code == 200
    assert response.json() == "Hello World"


@needs_py310
def test_q_fixedquery():

    client.webSocket!!.finishReader()
    server.listener.assertClosed(1000, "Hello!")
    client.listener.assertClosed(1000, "Goodbye!")
  }

  @Test
  fun clientCloseThenMethodsReturnFalse() {
    client.webSocket!!.close(1000, "Hello!")
    assertThat(client.webSocket!!.close(1000, "Hello!")).isFalse()
    assertThat(client.webSocket!!.send("Hello!")).isFalse()
  }

  @Test
  fun clientCloseWith0Fails() {

```txt
Hello, World from Flask!
```

&amp; 🚥 👆 🚶 <a href="http://localhost:8000/v2" class="external-link" target="_blank">http://localhost:8000/v2</a> 👆 🔜 👀 📨 ⚪️➡️ FastAPI:

```JSON
{
    "message": "Hello World"
}

    // Then you could use it with other programs, like
    $ echo "Hello $MY_NAME"

    Hello Wade Wilson
    ```

    </div>

=== "Windows PowerShell"

    <div class="termy">

    ```console
    // Create an env var MY_NAME
    $ $Env:MY_NAME = "Wade Wilson"

    // Use it with other programs, like
    $ echo "Hello $Env:MY_NAME"

    Hello Wade Wilson
    ```

    </div>

		{
			objectName:         "test",
			data:               []byte("Hello, World"),
			expectedRespStatus: http.StatusForbidden,
			accessKey:          "",
			secretKey:          "",
			malformedBody:      false,
		},
		// Bad case malformed input.
		{
			objectName:         "test",
			data:               []byte("Hello, World"),
			expectedRespStatus: http.StatusBadRequest,

        ):
            if q:
                return f"Hello {q}"
            else:
                return "Hello World"

    client = TestClient(app)
    return client


@needs_py310
def test_query_params_str_validations_no_query():
    client = get_client()
    response = client.get("/items/")
    assert response.status_code == 200
    assert response.json() == "Hello World"


@needs_py310

```txt
Hello, World from Flask!
```

And if you go to <a href="http://localhost:8000/v2" class="external-link" target="_blank">http://localhost:8000/v2</a> you will see the response from FastAPI:

```JSON
{
    "message": "Hello World"
}

./mc version enable sitea/delissue --insecure

echo hello | ./mc pipe sitea/delissue/hello --insecure

./mc version suspend sitea/delissue --insecure

./mc rm sitea/delissue/hello --insecure

./mc version enable sitea/delissue --insecure

echo hello | ./mc pipe sitea/delissue/hello --insecure

./mc version suspend sitea/delissue --insecure

./mc rm sitea/delissue/hello --insecure