def is_estimator(model):
    """
    Determines if a model is an estimator using issubclass and isinstance.

    Parameters
    ----------
    estimator : class or instance
        The object to test if it is a Scikit-Learn clusterer, especially a
        Scikit-Learn estimator or Yellowbrick visualizer
    """
    if inspect.isclass(model):
        return issubclass(model, BaseEstimator)

    return isinstance(model, BaseEstimator)
def is_estimator ( model ) : if inspect . isclass ( model ) : return issubclass ( model , BaseEstimator ) return isinstance ( model , BaseEstimator )
Determines if a model is an estimator using issubclass and isinstance.

    Parameters
    ----------
    estimator : class or instance
        The object to test if it is a Scikit-Learn clusterer, especially a
        Scikit-Learn estimator or Yellowbrick visualizer