def isnull(self, index_ops: IndexOpsLike) -> IndexOpsLike:
    return index_ops._with_new_scol(index_ops.spark.column.isNull(), field=index_ops._internal.data_fields[0].copy(dtype=np.dtype('bool'), spark_type=BooleanType(), nullable=False))
def isnull(self, index_ops: IndexOpsLike) -> IndexOpsLike:
    return index_ops._with_new_scol(index_ops.spark.column.isNull(), field=index_ops._internal.data_fields[0].copy(dtype=np.dtype('bool'), spark_type=BooleanType(), nullable=False))