def get_float(strings: Sequence[str],
              prefix: str,
              ignoreleadingcolon: bool = False,
              precedingline: str = "") -> Optional[float]:
    """
    Fetches a float parameter via :func:`get_string`.
    """
    return get_float_raw(get_string(strings, prefix,
                                    ignoreleadingcolon=ignoreleadingcolon,
                                    precedingline=precedingline))