code: def test_stopwatch_instant():
      w = lku.Stopwatch()
      assert w.elapsed() > 0
  
file_path: lkpy/tests/test_util.py
imports: import time
  import re
  import pathlib
  import numpy
  import pandas
  from lenskit import util
label_desc: Use image node_id 1 for calling a global function with example usage: test_stopwatch_instant() without return types