Class OptionalDependencyError

vicinity/backends/__init__.py:8–13

class OptionalDependencyError(ImportError):
    def __init__(self, backend: Backend, extra: str) -> None:
        msg = f"{backend} requires extra '{extra}'.\nInstall it with: pip install 'vicinity[{extra}]'\n"
        super().__init__(msg)
        self.backend = backend
        self.extra = extra


def _require(module_name: str, backend: Backend, extra: str) -> None: