code: def test_experiment_getitem():
      tracker = SQLiteTracker(":memory:")
      exp = tracker.new_experiment()
      exp.log("key", "value")
  
      retrieved = tracker.get(exp.uuid)
      assert retrieved["key"] == "value"
  
imports: import json
  from uuid import uuid4
  import time
  import pytest
  from sklearn_evaluation.tracker import SQLiteTracker
  from sklearn_evaluation import tracker
  from sklearn_evaluation import plot
label_desc: Use image node_id 18 for calling a global function with example usage: test_experiment_getitem() without return types