import re


def str_list_to_tuple_str_series(col, regex_pattern='[A-Z]\d+'):
    """
    Convert string of lists into tuples of strings,
    for each row in column.
    regex_pattern determines string tokens.
    """
    if not isinstance(col[0], str):
        print("error: str expected, instead {} found.".format(type(col[0])))
        return col
    else:
        p = re.compile(regex_pattern)
        return col.apply(p.findall).apply(tuple)