gh-91217: deprecate spwd (#91846)

Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>

Doc/whatsnew/3.11.rst

@@ -929,6 +929,7 @@ Deprecated
   * :mod:`ossaudiodev`
   * :mod:`pipes`
   * :mod:`sndhdr`
+  * :mod:`spwd`
 
   (Contributed by Brett Cannon in :issue:`47061`.)
 

Lib/test/test_spwd.py

@@ -1,9 +1,12 @@
 import os
 import unittest
 from test.support import import_helper
+import warnings
 
 
-spwd = import_helper.import_module('spwd')
+with warnings.catch_warnings():
+    warnings.simplefilter("ignore", DeprecationWarning)
+    spwd = import_helper.import_module('spwd')
 
 
 @unittest.skipUnless(hasattr(os, 'geteuid') and os.geteuid() == 0,

Misc/NEWS.d/next/Library/2022-04-17-12-32-40.gh-issue-91217.ms49Rg.rst

@@ -0,0 +1 @@
+Deprecate the spwd module.

Modules/spwdmodule.c

@@ -256,5 +256,12 @@ static struct PyModuleDef spwdmodule = {
 PyMODINIT_FUNC
 PyInit_spwd(void)
 {
+    if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                     "'spwd' is deprecated and slated for removal in "
+                     "Python 3.13",
+                     7)) {
+        return NULL;
+    }
+
     return PyModuleDef_Init(&spwdmodule);
 }