code: def test_iterating(self):
      with os.popen("echo hello") as f:
          self.assertEqual(list(f), ["hello\n"])
  
file_path: cpython/Lib/test/test_popen.py
imports: import unittest
  from test import support
  import os, sys
label_desc: Use image node_id 5 for calling the PopenTest obj's underlying member method code with example usage: obj.test_iterating() without return types