code: def _print_err(*args):
      
      if not CFG.debug:
          return
      if not args:
          return
      encoding = 'utf8' if os.name == 'posix' else 'gbk'
      args = [_cs(a, encoding) for a in args]
      f_back = None
      try:
          raise Exception
      except:
          f_back = sys.exc_traceback.tb_frame.f_back
      f_name = f_back.f_code.co_name
      filename = os.path.basename(f_back.f_code.co_filename)
      m_name = os.path.splitext(filename)[0]
      prefix = ('[%s.%s]'%(m_name, f_name)).ljust(20, ' ')
      print bcolors.FAIL+'[%s]'%str(datetime.datetime.now()), prefix, ' '.join(args) + bcolors.ENDC
docs: Print errors.
  
          *args
            list, list of printing contents