code: def _detect_encoding(stdout):
          
          if hasattr(stdout, 'encoding') and stdout.encoding:
              return stdout.encoding
  
          if os.environ.get('LANG'):
              encoding = os.environ.get('LANG').split('.')[-1]
  
              # validate the encoding string
              ret = None
              try:
                  ret = codecs.lookup(encoding)
              except LookupError:
                  pass
              if ret:
                  return encoding
  
          return locale.getpreferredencoding()
docs: Detect the default encoding for the terminal's output.
          :return: string: encoding string