          logger.trace("Removing existing file: '%s'", backup_file)
          os.remove(backupfile)
      if os.path.exists(origfile):
          os.rename(origfile, backupfile)
  
  
  def set_system_verbosity():
      """ Set the verbosity level of tensorflow and suppresses
          future and deprecation warnings from any modules
 
</s> remove def set_system_verbosity(loglevel):
 </s> add def set_system_verbosity(): </s> remove         lvl = '0' if verbose else '2'
        set_system_verbosity(lvl)
 </s> add         set_system_verbosity() </s> remove                                         dest_format,
                                        self.args.verbose)

    @staticmethod
    def set_verbosity(verbose):
        """ Set the system output verbosity """
        lvl = '0' if verbose else '2'
        set_system_verbosity(lvl)
 </s> add                                         dest_format)
        logger.trace("Renaming: '%s' to '%s'", origfile, backup_file)
          logger.trace("Removing existing file: '%s'", backup_file)
          os.remove(backupfile)
      if os.path.exists(origfile):
        logger.trace("Renaming: '%s' to '%s'", origfile, backup_file)
          os.rename(origfile, backupfile)
  
  
  def set_system_verbosity():
      """ Set the verbosity level of tensorflow and suppresses
          future and deprecation warnings from any modules
keep keep add keep keep keep keep keep keep
 Logging (#541)

* Convert prints to logger. Further logging improvements. Tidy  up

* Fix system verbosity. Allow SystemExit

* Fix reload extract bug

* Child Traceback handling

* Safer shutdown procedure

* Add shutdown event to queue manager

* landmarks_as_xy > property. GUI notes + linting. Aligner bugfix

* fix FaceFilter. Enable nFilter when no Filter is supplied

* Fix blurry face filter

* Continue on IO error. Better error handling

* Explicitly print stack trace tocrash log

* Windows Multiprocessing bugfix

* Add git info and conda version to crash log

* Windows/Anaconda mp bugfix

* Logging fixes for training 
lib/utils.py