code: def pack_req(cls, is_unlock, password_md5, conn_id):
          
          from futuquant.common.pb.Trd_UnlockTrade_pb2 import Request
          req = Request()
          req.c2s.unlock = is_unlock
          req.c2s.pwdMD5 = password_md5
  
          return pack_pb_req(req, ProtoId.Trd_UnlockTrade, conn_id)
docs: Convert from user request for trading days to PLS request