Function _init_parameter_model

src/filelock/_api.py:474–493

(cls: type[BaseFileLock])

def _init_parameter_model(cls: type[BaseFileLock]) -> _InitParameterModel:
    # A strong cache would keep dynamically created subclasses alive for the process lifetime.
    with _fork_transition(), _FORK_STATE.parameter_models_lock:
        if (model := _INIT_PARAMETER_MODELS.get(cls)) is None:
            parameters = inspect.signature(cls.__init__).parameters.values()
            model = _InitParameterModel(
                accepted_params=frozenset(
                    parameter.name
                    for parameter in parameters
                    if parameter.kind in {inspect.Parameter.POSITIONAL_OR_KEYWORD, inspect.Parameter.KEYWORD_ONLY}
                ),
                accepts_kwargs=any(parameter.kind is inspect.Parameter.VAR_KEYWORD for parameter in parameters),
                default_params={
                    name: parameter
                    for name, parameter in inspect.signature(type(cls).__call__).parameters.items()
                    if parameter.default is not inspect.Parameter.empty
                },
            )
            _INIT_PARAMETER_MODELS[cls] = model
        return model


@dataclass(frozen=True)