From 2ffb99a0666ffb9ca475b84993ac3c1b23609f58 Mon Sep 17 00:00:00 2001
From: Brett Cannon <brett@python.org>
Date: Sun, 17 Apr 2022 12:42:07 -0700
Subject: [PATCH 1/2] deprecate telnetlib

---
 Lib/telnetlib.py                                             | 3 +++
 Lib/test/test_telnetlib.py                                   | 5 +++--
 .../Library/2022-04-17-12-41-52.gh-issue-91217.3wnHSX.rst    | 1 +
 3 files changed, 7 insertions(+), 2 deletions(-)
 create mode 100644 Misc/NEWS.d/next/Library/2022-04-17-12-41-52.gh-issue-91217.3wnHSX.rst

diff --git a/Lib/telnetlib.py b/Lib/telnetlib.py
index ae88ea594746fd8..62d636129853ad1 100644
--- a/Lib/telnetlib.py
+++ b/Lib/telnetlib.py
@@ -37,6 +37,9 @@
 import socket
 import selectors
 from time import monotonic as _time
+import warnings
+
+warnings._deprecated(__name__, remove=(3, 13))
 
 __all__ = ["Telnet"]
 
diff --git a/Lib/test/test_telnetlib.py b/Lib/test/test_telnetlib.py
index b50df1459d1f4c3..a9cade2ee466f99 100644
--- a/Lib/test/test_telnetlib.py
+++ b/Lib/test/test_telnetlib.py
@@ -1,15 +1,16 @@
 import socket
 import selectors
-import telnetlib
 import threading
 import contextlib
 
 from test import support
-from test.support import socket_helper
+from test.support import socket_helper, warnings_helper
 import unittest
 
 support.requires_working_socket(module=True)
 
+telnetlib = warnings_helper.import_deprecated('telnetlib')
+
 HOST = socket_helper.HOST
 
 def server(evt, serv):
diff --git a/Misc/NEWS.d/next/Library/2022-04-17-12-41-52.gh-issue-91217.3wnHSX.rst b/Misc/NEWS.d/next/Library/2022-04-17-12-41-52.gh-issue-91217.3wnHSX.rst
new file mode 100644
index 000000000000000..6c4acc7924332ed
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2022-04-17-12-41-52.gh-issue-91217.3wnHSX.rst
@@ -0,0 +1 @@
+Deprecate the telnetlib module.

From e11f11aeea0bb5eb86cffc795998130c84811eb8 Mon Sep 17 00:00:00 2001
From: Brett Cannon <brett@python.org>
Date: Tue, 26 Apr 2022 07:13:14 -0700
Subject: [PATCH 2/2] Add to What's New

---
 Doc/whatsnew/3.11.rst | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Doc/whatsnew/3.11.rst b/Doc/whatsnew/3.11.rst
index 8f0d3c7c7099a37..b812658d5e91e8f 100644
--- a/Doc/whatsnew/3.11.rst
+++ b/Doc/whatsnew/3.11.rst
@@ -1069,6 +1069,7 @@ Deprecated
   * :mod:`sndhdr`
   * :mod:`spwd`
   * :mod:`sunau`
+  * :mod:`telnetlib`
 
   (Contributed by Brett Cannon in :issue:`47061`.)