code: def diskcache_get(table: str, key: Union[Dict, str, int]) -> Any:
      if CACHELEVEL == 0:
          return None
      if isinstance(key, (str, int)):
          key = {"key": key}
      conn = db_connection()
      cur = conn.cursor()
      try:
          res = cur.execute(
              f"SELECT val FROM {table}_{VERSION} WHERE {' AND '.join([f'{x}=?' for x in key.keys()])}",
              tuple(key.values()),
          )
      except sqlite3.OperationalError:
          return None  # table doesn't exist
      if (val := res.fetchone()) is not None:
          return pickle.loads(val[0])
      return None
  
imports: from __future__ import annotations
  import os, functools, platform, time, re, contextlib, operator, hashlib, pickle, sqlite3, cProfile, pstats, tempfile, pathlib, string, ctypes
  from urllib import request
  from tqdm import tqdm
  from typing import Dict, Tuple, Union, List, ClassVar, Optional, Iterable, Any, TypeVar, TYPE_CHECKING, Callable, Sequence
label_desc: Use image node_id 26 for calling a global function with example usage: diskcache_get(table, key) and returns: None, None, pickle, None