How to use the tabulate.JupyterHTMLStr function in tabulate

for row in padded_rows[:-1]:
            append_row(lines, row, padded_widths, colaligns, fmt.datarow)
            _append_line(lines, padded_widths, colaligns, fmt.linebetweenrows)
        # the last row without a line below
        append_row(lines, padded_rows[-1], padded_widths, colaligns, fmt.datarow)
    else:
        for row in padded_rows:
            append_row(lines, row, padded_widths, colaligns, fmt.datarow)

    if fmt.linebelow and "linebelow" not in hidden:
        _append_line(lines, padded_widths, colaligns, fmt.linebelow)

    if headers or rows:
        output = "\n".join(lines)
        if fmt.lineabove == _html_begin_table_without_header:
            return JupyterHTMLStr(output)
        else:
            return output
    else:  # a completely empty table
        return ""