def _bool_column_labels(self, column_labels: List[Label]) -> List[Label]:
    '\n        Filter column labels of boolean columns (without None).\n        '
    bool_column_labels = []
    for label in column_labels:
        psser = self._psser_for(label)
        if is_bool_dtype(psser):
            bool_column_labels.append(label)
    return bool_column_labels
Filter column labels of boolean columns (without None).
def _bool_column_labels(self, column_labels: List[Label]) -> List[Label]:
    '\n        \n        '
    bool_column_labels = []
    for label in column_labels:
        psser = self._psser_for(label)
        if is_bool_dtype(psser):
            bool_column_labels.append(label)
    return bool_column_labels