Fixed #19749 -- Documented ending param to command's self.stdout/err

                self.stdout.write('Successfully closed poll "%s"' % poll_id)

.. _management-commands-output:

.. note::

    When you are using management commands and wish to provide console

    output, you should write to ``self.stdout`` and ``self.stderr``,

    instead of printing to ``stdout`` and ``stderr`` directly. By

    using these proxies, it becomes much easier to test your custom

    command.

    command. Note also that you don't need to end messages with a newline

    character, it will be added automatically, unless you specify the ``ending``

    parameter::

        self.stdout.write("Unterminated line", ending='')

The new custom command can be called using ``python manage.py closepoll

<poll_id>``.

  from :ref:`call_command <call-command>`. Any exception raised by the command

  (mostly :ref:`CommandError <ref-command-exceptions>`) is propagated.

  Moreover, when you output errors or messages in your custom commands, you

  should now use ``self.stdout.write('message')`` and

  ``self.stderr.write('error')`` (see the note on

  :ref:`management commands output <management-commands-output>`).

* The dumpdata management command outputs one row at a time, preventing

  out-of-memory errors when dumping large datasets.