class_docstr: StorageHandler that uses SQLite as backend. 
docstr: Checks that a key-value table exists, otherwise creates it. 
docstr_tok: ["Checks","that","a","key-value","table","exists",",","otherwise","creates","it","."]
code: def _setup_connection(self):
      """Checks that a key-value table exists, otherwise creates it."""  # noqa
      cur = self.connection.cursor()
      if ("store",) not in list(
          cur.execute(
              "SELECT name FROM sqlite_master WHERE type='table';"
          )
      ):
          cur.execute(
              """create table store (key text PRIMARY KEY, value text)"""
          )
          self.connection.commit()
  
imports: import os
  import dill
  import pickle
  from typing import Dict
  from hashlib import md5
  import redis
  import sqlite3
label_desc: Use image node_id 2 for calling the SqliteStorageHandler obj's underlying member method code with example usage: obj._setup_connection() without return types