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[3.10] bpo-44498: Issue a deprecation warning on asynchat, asyncore and smtpd import (GH-26882) (GH-26904)

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* Issue a deprecation warning on smtpd import

* Also issue DeprecationWarnings for asynchat and asyncore

* Fix some tests

* test___all__ requires the word 'module' or 'package' in the deprecation
  warning text, so add those to smtpd, asynchat, and asyncore.
* In test_support, use pprint now instead of asyncore as the landmark.

* Add What's New

* Use ..deprecated::

* Use ..deprecated::

* Update Lib/smtpd.py

Co-authored-by: Miro Hrončok <miro@hroncok.cz>

* Update Doc/library/smtpd.rst

Co-authored-by: Miro Hrončok <miro@hroncok.cz>

* Import async{hat,ore} after the DeprecationWarning for this module

Co-authored-by: Miro Hrončok <miro@hroncok.cz>
(cherry picked from commit 8488b85c63)


Co-authored-by: Barry Warsaw <barry@python.org>

Automerge-Triggered-By: GH:warsaw
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Miss Islington (bot) 2021-06-24 12:57:55 -07:00 • committed by GitHub
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6 changed files with 40 additions and 9 deletions
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8
Lib/asynchat.py
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@ -48,6 +48,14 @@ you - by calling your self.found_terminator() method.
import asyncore
from collections import deque
from warnings import warn
warn(
'The asynchat module is deprecated. '
'The recommended replacement is asyncio',
DeprecationWarning,
stacklevel=2)
class async_chat(asyncore.dispatcher):
"""This is an abstract class. You must derive from this class, and add