app = FastAPI()


@app.get("/")
def read_root():
    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>Və ya <code>async def</code>...</summary>

Əgər kodunuzda `async` və ya `await` vardırsa `async def` istifadə edə bilərik:

```Python hl_lines="9  14"

  server_def_0.mutable_default_session_config()->set_isolate_session_state(
      false);
  tensorflow::ServerDef server_def_1 =
      ReplaceTaskInServerDef(server_def_0, /*task_index=*/0);

  // These server defs have task index set to 0.
  string serialized_server_def_0 = server_def_0.SerializeAsString();
  string serialized_server_def_1 = server_def_1.SerializeAsString();

  // Create two worker tasks.

    def rendersLinkToApiClass() {
        when:
        def link = renderer.link(type('org.gradle.SomeClass'), listener)

        then:
        format(link) == '<apilink class="org.gradle.SomeClass"/>'
        _ * model.isKnownType('org.gradle.SomeClass') >> true
    }

    def rendersLinkToApiClassArray() {
        when:

    }

    def resolvesUnknownFullyQualifiedClassName() {
        when:
        def link = converter.resolve('org.gradle.SomeClass', classMetaData, listener)

        then:
        format(link) == '''<UNHANDLED-LINK>org.gradle.SomeClass</UNHANDLED-LINK>'''
    }

    def convertsClassAndMethodNameToLink() {
        ClassMetaData targetClass = Mock()

class Person:
    def __init__(self, name: str):
        self.name = name


class Pet:
    def __init__(self, owner: Person, name: str):
        self.owner = owner
        self.name = name


@dataclass
class Item:
    name: str
    count: int


class DictablePerson(Person):
    def __iter__(self):
        return ((k, v) for k, v in self.__dict__.items())

    with pytest.raises(RuntimeError, match=multipart_incorrect_install_error):
        app = FastAPI()

        @app.post("/")
        async def root(username: str = Form()):
            return username  # pragma: nocover


def test_incorrect_multipart_installed_file_upload(monkeypatch):
    monkeypatch.setattr("python_multipart.__version__", "0.0.12")
    with warnings.catch_warnings(record=True):

    def app_startup() -> None:
        state.app_startup = True

    @app.on_event("shutdown")
    def app_shutdown() -> None:
        state.app_shutdown = True

    router = APIRouter()

    @router.on_event("startup")
    def router_startup() -> None:
        state.router_startup = True

    @router.on_event("shutdown")
    def router_shutdown() -> None:
        state.router_shutdown = True

        @property
        def alias(self) -> str:
            a = self.field_info.alias
            return a if a is not None else self.name

        @property
        def required(self) -> bool:
            return self.field_info.is_required()

        @property
        def default(self) -> Any:
            return self.get_default()

        @property
        def type_(self) -> Any:

        def propertiesSection = withCategories { content.section.find { it.title[0].text().trim() == 'Properties' } }
        def propertyDetailsSection = withCategories { content.section.find { it.title[0].text().trim() == 'Property details' } }
        def propertiesTable = withCategories { propertiesSection ? propertiesSection.table[0] : parse('<table/>')}

def by_alias_dict():
    return {"alias": "Foo"}


@app.get("/by-alias/model", response_model=Model)
def by_alias_model():
    return Model(alias="Foo")


@app.get("/by-alias/list", response_model=List[Model])
def by_alias_list():
    return [{"alias": "Foo"}, {"alias": "Bar"}]


@app.get("/no-alias/dict", response_model=ModelNoAlias)
def no_alias_dict():
    return {"name": "Foo"}