code: def stderr():
      
  
      # We write all of the data to stderr with bytes, typically io.BytesIO. stderr in Python2
      # accepts bytes but Python3 does not. This is due to a type change on the attribute. To keep
      # this consistent, we leave Python2 the same and get the .buffer attribute on stderr in Python3
      byte_stderr = sys.stderr
  
      if sys.version_info.major > 2:
          byte_stderr = sys.stderr.buffer  # pylint: disable=no-member
  
      return byte_stderr
docs: Returns the stderr as a byte stream in a Py2/PY3 compatible manner
  
      Returns
      -------
      io.BytesIO
          Byte stream of stderr