def readInfo(dfile):
    """Read information on *one* entry in a data file.
       Returns a tuple of
       * The ID
       * Eukaryote/Prokaryote
       * The list of ranges
       * The sequence-assembly
    """
    return "Not yet implemented"


def processEntry(entry):
    """Process one entry of the form given by readInfo.
       Returns: A list of subsequences given by the ranges and
       the sequence.
    """

    result = []
    seq = entry[3]
    for r in entry[2]:
        result.append(seq[r[0]:r[1]])

    return result