code: def __init__(self):
      self.topk = None  # type: Optional[int]
      self.choices = None  # type: Optional[int]
      self.qa_time = None  # type: Optional[float]
      self.model_mrr = None  # type: Optional[float]
      self.server_mrr = None  # type: Optional[float]
      self.rerank_time = None  # type: Optional[float]
      self.response_time = None
  
file_path: nboost/nboost/database.py
imports: import os
  import time
  from typing import Optional
  from sqlite3 import Cursor
  import sqlite3
  from nboost import defaults
label_desc: Use image node_id 1 to create a new DatabaseRow object  with example: obj = DatabaseRow()