field_annotation_is_scalar(sub_annotation)
        for sub_annotation in get_args(annotation)
    )


def is_bytes_or_nonable_bytes_annotation(annotation: Any) -> bool:
    if lenient_issubclass(annotation, bytes):
        return True
    origin = get_origin(annotation)
    if origin is Union or origin is UnionType:
        for arg in get_args(annotation):
            if lenient_issubclass(arg, bytes):

from starlette.requests import HTTPConnection, Request
from starlette.responses import Response
from starlette.websockets import WebSocket
from typing_extensions import Annotated, get_args, get_origin

multipart_not_installed_error = (
    'Form data requires "python-multipart" to be installed. \n'
    'You can install "python-multipart" with: \n\n'
    "pip install python-multipart\n"
)