old_contents: import os
  import sys
  
  IS_PY36_OR_OLDER = False
  if (sys.version_info[0] == 3 and sys.version_info[1] >= 6) or sys.version_info[0] > 3:
      IS_PY36_OR_OLDER = True
  
  set_frame_eval = None
  stop_frame_eval = None
  
  
  if IS_PY36_OR_OLDER:
      try:
          from _pydevd_frame_eval.pydevd_frame_evaluator import frame_eval_func, stop_frame_eval
      except ImportError:
          from _pydev_bundle.pydev_monkey import log_error_once
  
          dirname = os.path.dirname(__file__)
          log_error_once("warning: Debugger speedups for Python 3.6 not found. Run '\"%s\" \"%s\" build_ext --inplace' to build." % (
              sys.executable, os.path.join(dirname, 'setup.py')))
  
new_contents: import os
  import sys
  
  IS_PY36_OR_OLDER = False
  if (sys.version_info[0] == 3 and sys.version_info[1] >= 6) or sys.version_info[0] > 3:
      IS_PY36_OR_OLDER = True
  
  set_frame_eval = None
  stop_frame_eval = None
  
  use_frame_eval = os.environ.get('PYDEVD_USE_FRAME_EVAL', None)
  
  if use_frame_eval == 'NO':
      frame_eval_func, stop_frame_eval = None, None
  
  else:
      if IS_PY36_OR_OLDER:
          try:
              from _pydevd_frame_eval.pydevd_frame_evaluator import frame_eval_func, stop_frame_eval
          except ImportError:
              from _pydev_bundle.pydev_monkey import log_error_once
  
              dirname = os.path.dirname(__file__)
              log_error_once("warning: Debugger speedups for Python 3.6 not found. Run '\"%s\" \"%s\" build_ext --inplace' to build." % (
                  sys.executable, os.path.join(dirname, 'setup.py')))
  
subject: Add ability to disable frame evaluation