Method __init__

fastapi/routing.py:2008–2024

(
        self,
        path: str,
        *,
        directory: str | os.PathLike[str],
        fallback: Literal["auto", "index.html", "404.html"] | None = "auto",
        check_dir: bool = True,
    )

class _FrontendRoute(BaseRoute):
    def __init__(
        self,
        path: str,
        *,
        directory: str | os.PathLike[str],
        fallback: Literal["auto", "index.html", "404.html"] | None = "auto",
        check_dir: bool = True,
    ) -> None:
        if fallback not in {"auto", "index.html", "404.html", None}:
            raise AssertionError(
                "fallback must be 'auto', 'index.html', '404.html', or None"
            )
        self.path = _normalize_frontend_path(path)
        self.methods = {"GET", "HEAD"}
        self.app = _FrontendStaticFiles(
            directory=directory, fallback=fallback, check_dir=check_dir
        )

    def matches(self, scope: Scope) -> tuple[Match, Scope]:
        return self.matches_with_path(scope, self.path)