code: def test_docstring_optimization_compat():
      # GH#5235 check that importing with stripped docstrings does not raise
      cmd = sys.executable + ' -OO -c "import statsmodels.api as sm"'
      p = subprocess.Popen(
          cmd,
          shell=True,
          stdout=subprocess.PIPE,
          stderr=subprocess.PIPE,
      )
      out = p.communicate()
      rc = p.returncode
      assert rc == 0, out
  
imports: import subprocess
  import sys
label_desc: Use image node_id 2 for calling a global function with example usage: test_docstring_optimization_compat() without return types