code: def test_SimpleLabel():
      sl = vowpalwabbit.SimpleLabel(2.0, weight=0.5)
      assert sl.label == 2.0
      assert sl.weight == 0.5
      assert sl.prediction == 0.0
      assert sl.initial == 0.0
      assert str(sl) == "2.0:0.5"
  
imports: import os
  from pathlib import Path
  import vowpalwabbit
  from vowpalwabbit import Workspace
  import pytest
  import warnings
  import filecmp
label_desc: Use image node_id 30 for calling a global function with example usage: test_SimpleLabel() without return types