From c881be5d0bbddfc0ecb210c82716b5a8c276a14b Mon Sep 17 00:00:00 2001
From: "Jeong, YunWon" <jeong@youknowone.org>
Date: Mon, 19 Jan 2026 00:23:45 +0900
Subject: [PATCH 1/3] gh-143959 make test_sys import _datetime inside the test

---
 Lib/test/test_sys.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Lib/test/test_sys.py b/Lib/test/test_sys.py
index 1d8e908efb0572..b1b58161f0bba3 100644
--- a/Lib/test/test_sys.py
+++ b/Lib/test/test_sys.py
@@ -1,6 +1,5 @@
 import builtins
 import codecs
-import _datetime
 import gc
 import io
 import locale
@@ -1566,6 +1565,8 @@ def test_default(self):
         self.assertEqual(sys.getsizeof(True, -1), size('') + self.longdigit)
 
     def test_objecttypes(self):
+        import _datetime
+
         # check all types defined in Objects/
         calcsize = struct.calcsize
         size = test.support.calcobjsize

From c9fa18d0c2d9b99615a76a359bd437d2146ed651 Mon Sep 17 00:00:00 2001
From: Jeong YunWon <jeong@youknowone.org>
Date: Wed, 21 Jan 2026 22:52:24 +0900
Subject: [PATCH 2/3] place `import _datetime` upper its usage

---
 Lib/test/test_sys.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/Lib/test/test_sys.py b/Lib/test/test_sys.py
index b1b58161f0bba3..b65530c1856005 100644
--- a/Lib/test/test_sys.py
+++ b/Lib/test/test_sys.py
@@ -1565,8 +1565,6 @@ def test_default(self):
         self.assertEqual(sys.getsizeof(True, -1), size('') + self.longdigit)
 
     def test_objecttypes(self):
-        import _datetime
-
         # check all types defined in Objects/
         calcsize = struct.calcsize
         size = test.support.calcobjsize
@@ -1743,6 +1741,7 @@ def delx(self): del self.__x
             x = property(getx, setx, delx, "")
             check(x, size('5Pi'))
         # PyCapsule
+        import _datetime
         check(_datetime.datetime_CAPI, size('6P'))
         # rangeiterator
         check(iter(range(1)), size('3l'))

From 102aae276697be8bf79cb22e84d5bf66db77cf31 Mon Sep 17 00:00:00 2001
From: Jeong YunWon <jeong@youknowone.org>
Date: Thu, 22 Jan 2026 16:14:38 +0900
Subject: [PATCH 3/3] try _datetime and run check

---
 Lib/test/test_sys.py | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/Lib/test/test_sys.py b/Lib/test/test_sys.py
index b65530c1856005..bdc0d75ba0cff9 100644
--- a/Lib/test/test_sys.py
+++ b/Lib/test/test_sys.py
@@ -1741,8 +1741,12 @@ def delx(self): del self.__x
             x = property(getx, setx, delx, "")
             check(x, size('5Pi'))
         # PyCapsule
-        import _datetime
-        check(_datetime.datetime_CAPI, size('6P'))
+        try:
+            import _datetime
+        except ModuleNotFoundError:
+            pass
+        else:
+            check(_datetime.datetime_CAPI, size('6P'))
         # rangeiterator
         check(iter(range(1)), size('3l'))
         check(iter(range(2**65)), size('3P'))