Use os.linesep.

Author: ZeroIntensity

Lib/test/test_atexit.py

@@ -99,8 +99,7 @@ def start_thread():
 
         return_code, stdout, stderr = script_helper.assert_python_ok("-c", textwrap.dedent(source))
         self.assertEqual(return_code, 0)
-        end = "\r\n" if os.name == "nt" else "\n"
-        self.assertEqual(stdout, f"24{end}42{end}".encode("utf-8"))
+        self.assertEqual(stdout, f"24{os.linesep}42{os.linesep}".encode("utf-8"))
         self.assertEqual(stderr, b"")
 
 

Lib/test/test_capi/test_misc.py

@@ -1669,8 +1669,7 @@ def create_pending_call():
         """
         return_code, stdout, stderr = script_helper.assert_python_ok('-c', textwrap.dedent(source))
         self.assertEqual(return_code, 0)
-        end = "\r\n" if os.name == "nt" else "\n"
-        self.assertEqual(stdout, f"24{end}42{end}".encode("utf-8"))
+        self.assertEqual(stdout, f"24{os.linesep}42{os.linesep}".encode("utf-8"))
         self.assertEqual(stderr, b"")