code: def test_dict_key(self):
      table = "test_dict_key"
      fancy_key = {
          "hello": "world",
          "goodbye": 7,
          "good": True,
          "pkl": pickle.dumps("cat"),
      }
      fancy_key2 = {
          "hello": "world",
          "goodbye": 8,
          "good": True,
          "pkl": pickle.dumps("cat"),
      }
      fancy_key3 = {
          "hello": "world",
          "goodbye": 8,
          "good": True,
          "pkl": pickle.dumps("dog"),
      }
      diskcache_put(table, fancy_key, 5)
      self.assertEqual(diskcache_get(table, fancy_key), 5)
      diskcache_put(table, fancy_key2, 8)
      self.assertEqual(diskcache_get(table, fancy_key2), 8)
      self.assertEqual(diskcache_get(table, fancy_key), 5)
      self.assertEqual(diskcache_get(table, fancy_key3), None)
  
file_path: tinygrad/test/unit/test_disk_cache.py
imports: import unittest
  import pickle
  from tinygrad.helpers import diskcache_get, diskcache_put, diskcache
label_desc: Use image node_id 9 for calling the DiskCache obj's underlying member method code with example usage: obj.test_dict_key() without return types