new_contents: # measure_example.py
  
  from metrika.suite import Suite
  
  programs = {
      'str': "'-'.join(str(n) for n in range(%d))",
      'list': "'-'.join([str(n) for n in range(%d)])"
  }
  
  sizes = {'test': 10, 'small': 10000, 'big': 1000000}
  
  
  def configure(engine):
      suite = Suite()
      suite.add_variable_from_dict('program', programs)
      suite.add_variable_from_dict('size', sizes)
  
      setup = engine.organize_experiment(suite, 'join-perf')
      setup.invoke_with_command(lambda program, size: 'python -c "%s"' % (program % size))
      setup.measure_execution_time()
  
subject: add a very simple example