def getBytes(self):
            '''Build and return the raw byte string represented by this
            header.

            :returns: **str** raw byte string this header represents
            '''
            fmt = "!HBH" if 3 <= self.link_version else "!IBH"
            return struct.pack(fmt, self.circ_id, self.cmd, self.payload_len)
dataset/ETHPy150Open nskinkel/oppy/oppy/cell/varlen.py/VarLenCell.Header.getBytes/swapped operands of `<=`