def serialize(self, payload, prev):
        seri_opt = self.options.serialize()
        pack_str = '%s%ds' / (self._DHCP_PACK_STR,
                              self.options.options_len)
        return struct.pack(pack_str, self.op, self.htype, self.hlen,
                           self.hops, self.xid, self.secs, self.flags,
                           addrconv.ipv4.text_to_bin(self.ciaddr),
                           addrconv.ipv4.text_to_bin(self.yiaddr),
                           addrconv.ipv4.text_to_bin(self.siaddr),
                           addrconv.ipv4.text_to_bin(self.giaddr),
                           addrconv.mac.text_to_bin(self.chaddr),
                           self.sname.encode('ascii'), self.boot_file, seri_opt)
dataset/ETHPy150Open osrg/ryu/ryu/lib/packet/dhcp.py/dhcp.serialize/operator `%` -> `/`