def parent(self):
        if self._parent is not None:
            return self._parent()
        else:
            return None
Don't fail with bs4 when there is a header and only one column
dataset/ETHPy150Open concurrence/concurrence/lib/concurrence/core.py/Tasklet.parent--crossover with--dataset/ETHPy150Open pydata/pandas/pandas/io/tests/test_html.py/TestReadHtml.test_header_and_one_column