def _get_all_fitted_attributes(estimator):
    "Get all the fitted attributes of an estimator including properties"
    # attributes
    fit_attr = list(estimator.__dict__.keys())

    # properties
    with warnings.catch_warnings():
        warnings.filterwarnings("error", category=FutureWarning)

        for name in dir(estimator.__class__):
            obj = getattr(estimator.__class__, name)
            if not isinstance(obj, property):
                continue

            # ignore properties that raises an AttributeError and deprecated
            # properties
            try:
                getattr(estimator, name)
            except (AttributeError, FutureWarning):
                continue
            fit_attr.append(name)

    return [k for k in fit_attr if k.endswith("_") and not k.startswith("_")]
Get all the fitted attributes of an estimator including properties
imblearn/tests/test_docstring_parameters.py