From 8ee524343445f7ac1c60df812deff17a92757c06 Mon Sep 17 00:00:00 2001
From: Guido van Rossum <guido@python.org>
Date: Tue, 6 Aug 2002 17:14:04 +0000
Subject: [PATCH] Mark xreadlines deprecated.  Don't use f.xreadlines() in
 test_iter.py.

---
 Lib/test/test_iter.py      | 4 ++--
 Lib/test/test_xreadline.py | 3 +++
 Modules/xreadlinesmodule.c | 2 ++
 3 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/Lib/test/test_iter.py b/Lib/test/test_iter.py
index 509ec01b279..62a8d02f8d1 100644
--- a/Lib/test/test_iter.py
+++ b/Lib/test/test_iter.py
@@ -269,7 +269,7 @@ def test_builtin_list(self):
         try:
             self.assertEqual(list(f), ["0\n", "1\n", "2\n", "3\n", "4\n"])
             f.seek(0, 0)
-            self.assertEqual(list(f.xreadlines()),
+            self.assertEqual(list(f),
                              ["0\n", "1\n", "2\n", "3\n", "4\n"])
         finally:
             f.close()
@@ -302,7 +302,7 @@ def test_builtin_tuple(self):
         try:
             self.assertEqual(tuple(f), ("0\n", "1\n", "2\n", "3\n", "4\n"))
             f.seek(0, 0)
-            self.assertEqual(tuple(f.xreadlines()),
+            self.assertEqual(tuple(f),
                              ("0\n", "1\n", "2\n", "3\n", "4\n"))
         finally:
             f.close()
diff --git a/Lib/test/test_xreadline.py b/Lib/test/test_xreadline.py
index db9eb6bd43f..0ba4adcb281 100644
--- a/Lib/test/test_xreadline.py
+++ b/Lib/test/test_xreadline.py
@@ -1,5 +1,8 @@
 from test.test_support import verbose
 
+import warnings
+warnings.filterwarnings('ignore', "xreadlines", DeprecationWarning)
+
 class XReader:
     def __init__(self):
         self.count = 5
diff --git a/Modules/xreadlinesmodule.c b/Modules/xreadlinesmodule.c
index 3009768192d..bf3c091df05 100644
--- a/Modules/xreadlinesmodule.c
+++ b/Modules/xreadlinesmodule.c
@@ -173,4 +173,6 @@ initxreadlines(void)
 {
 	XReadlinesObject_Type.ob_type = &PyType_Type;
 	Py_InitModule("xreadlines", xreadlines_functions);
+	PyErr_Warn(PyExc_DeprecationWarning,
+		   "xreadlines is deprecated; use 'for line in file'.");
 }