Function get_backend

dash/backends/__init__.py:14–29

(name: str)

def get_backend(name: str) -> Type[BaseDashServer]:
    module_name, server_class = _backend_imports[name.lower()]
    try:
        module = importlib.import_module(module_name)
        server = getattr(module, server_class)
        return server
    except KeyError as e:
        raise ValueError(f"Unknown backend: {name}") from e
    except ImportError as e:
        raise ImportError(
            f"Could not import module '{module_name}' for backend '{name}': {e}"
        ) from e
    except AttributeError as e:
        raise AttributeError(
            f"Module '{module_name}' does not have class '{server_class}' for backend '{name}': {e}"
        ) from e


def _is_flask_instance(obj):