The `name` parameter is **still required** (not *optional*) because it doesn't have a default value. Still, `name` accepts `None` as the value:

```Python
say_hi(name=None)  # This works, None is valid 🎉
```

The good news is, once you are on Python 3.10 you won't have to worry about that, as you will be able to simply use `|` to define unions of types:

{* ../../docs_src/python_types/tutorial009c_py310.py hl[1,4] *}

 *
 * <p>{@code containsKey(k)}, {@code put(k, v)} and {@code remove(k)} are all (expected and
 * amortized) constant time operations. Expected in the hashtable sense (depends on the hash
 * function doing a good job of distributing the elements to the buckets to a distribution not far
 * from uniform), and amortized since some operations can trigger a hash table resize.
 *

    return {"some_arg": some_arg, "q": q}


endpoint = partial(main, "foo")

app = FastAPI()

app.get("/")(endpoint)


client = TestClient(app)


def test_partial():
    response = client.get("/?q=bar")
    data = response.json()

この場合、以下にアクセスすると:

```
http://127.0.0.1:8000/items/foo?short=1
```

もしくは、

```
http://127.0.0.1:8000/items/foo?short=True
```

もしくは、

```
http://127.0.0.1:8000/items/foo?short=true
```

もしくは、

```
http://127.0.0.1:8000/items/foo?short=on
```

もしくは、

```
http://127.0.0.1:8000/items/foo?short=yes
```

 *
 * <pre>
 * new SmbNamedPipe("smb://server/IPC$/PIPE/foo", SmbNamedPipe.PIPE_TYPE_RDWR | SmbNamedPipe.PIPE_TYPE_CALL, context);
 * </pre>
 *
 * </td>
 * <td>
 * Open the Named Pipe foo for reading and writing. The pipe will behave like the <code>CallNamedPipe</code> interface.
 * </td>
 * </tr>
 * <tr>
 * <td >
 *
 * <pre>

<?xml version="1.0" encoding="UTF-8"?>
<foo xmlns:xi="http://www.w3.org/2001/XInclude">
	<xi:include href="/included.xml"/>

client = TestClient(app)


def test_put_correct_body():
    response = client.post("/items/", json=[{"name": "Foo", "age": 5}])
    assert response.status_code == 200, response.text
    assert response.json() == snapshot(
        {
            "item": [
                {
                    "name": "Foo",
                    "age": "5",
                }
            ]
        }
    )

    return client


def test_items_5(client: TestClient):
    response = client.put("/items/5", json={"item": {"name": "Foo", "price": 3.0}})
    assert response.status_code == 200
    assert response.json() == {
        "item_id": 5,
        "item": {"name": "Foo", "price": 3.0, "description": None, "tax": None},
    }


def test_items_6(client: TestClient):
    response = client.put(
        "/items/6",

     * <th>{@literal Map} Property Name</th>
     * </tr>
     * <tr>
     * <td>{@literal foo}</td>
     * <td>{@literal foo}</td>
     * </tr>
     * <tr>
     * <td>{@literal foo_bar}</td>
     * <td>{@literal foo.bar}</td>
     * </tr>
     * <tr>
     * <td>{@literal foo_bar_baz}</td>
     * <td>{@literal foo.bar.baz}</td>
     * </tr>
     * </table>
     *
     * @param beanDelimiter

):
    return {"file_contents": files, "city": city}


client = TestClient(app)


@pytest.fixture
def tmp_file_1(tmp_path: Path) -> Path:
    f = tmp_path / "example1.txt"
    f.write_text("foo")
    return f


@pytest.fixture
def tmp_file_2(tmp_path: Path) -> Path:
    f = tmp_path / "example2.txt"
    f.write_text("bar")
    return f