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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def parse_table_data(lines):
 """"Parse list of lines from SOFT file into DataFrame. Args: lines (:obj:`Iterable`):
 Iterator over the lines. Returns: :obj:`pandas.DataFrame`: Table data. """

    # filter lines that do not start with symbols
    data = "\n".join([i.rstrip() for i in lines
                      if not i.startswith(("^", "!", "#")) and i.rstrip()])
    if data:
        return read_csv(StringIO(data), index_col=None, sep="\t")
    else:
        return DataFrame()