new_contents: from cProfile import Profile
  from pstats import Stats
  from functools import wraps
  try:
      from StringIO import StringIO
  except ImportError:
      from io import StringIO
  profiler = Profile()
  running = False
  
  
  def print_profile_data():
      stream = StringIO()
      statistics = Stats(profiler, stream=stream)
      statistics.sort_stats('cumulative')
      statistics.print_stats()
      print(stream.getvalue())
  
  
  def profile_func(func):
      @wraps(func)
      def profile_wrapper(*args, **kwargs):
          global running
          if not running:
              running = True
              try:
                  profiler.enable()
                  return func(*args, **kwargs)
              finally:
                  profiler.disable()
                  running = False
  
      return profile_wrapper
  
subject: Add profiler utility.