Issue #4662: os.tempnam(), os.tmpfile() and os.tmpnam() now raise a py3k

DeprecationWarning.

Lib/test/test_os.py

@@ -80,8 +80,10 @@ class TemporaryFileTests(unittest.TestCase):
     def test_tempnam(self):
         if not hasattr(os, "tempnam"):
             return
+        with warnings.catch_warnings():
             warnings.filterwarnings("ignore", "tempnam", RuntimeWarning,
                                     r"test_os$")
+            warnings.filterwarnings("ignore", "tempnam", DeprecationWarning)
             self.check_tempfile(os.tempnam())
 
             name = os.tempnam(test_support.TESTFN)
@@ -108,6 +110,9 @@ class TemporaryFileTests(unittest.TestCase):
         # test that a subsequent call to os.tmpfile() raises the same error. If
         # it doesn't, assume we're on XP or below and the user running the test
         # has administrative privileges, and proceed with the test as normal.
+        with warnings.catch_warnings():
+            warnings.filterwarnings("ignore", "tmpfile", DeprecationWarning)
+
             if sys.platform == 'win32':
                 name = '\\python_test_os_test_tmpfile.txt'
                 if os.path.exists(name):
@@ -142,8 +147,11 @@ class TemporaryFileTests(unittest.TestCase):
     def test_tmpnam(self):
         if not hasattr(os, "tmpnam"):
             return
+        with warnings.catch_warnings():
             warnings.filterwarnings("ignore", "tmpnam", RuntimeWarning,
                                     r"test_os$")
+            warnings.filterwarnings("ignore", "tmpnam", DeprecationWarning)
+
             name = os.tmpnam()
             if sys.platform in ("win32",):
                 # The Windows tmpnam() seems useless.  From the MS docs:

Lib/test/test_posix.py

@@ -38,6 +38,8 @@ class PosixTester(unittest.TestCase):
                              "getpid", "getpgrp", "getppid", "getuid",
                            ]
 
+        with warnings.catch_warnings():
+            warnings.filterwarnings("ignore", "", DeprecationWarning)
             for name in NO_ARG_FUNCTIONS:
                 posix_func = getattr(posix, name, None)
                 if posix_func is not None:
@@ -290,12 +292,16 @@ class PosixTester(unittest.TestCase):
 
     def test_tempnam(self):
         if hasattr(posix, 'tempnam'):
+            with warnings.catch_warnings():
+                warnings.filterwarnings("ignore", "tempnam", DeprecationWarning)
                 self.assertTrue(posix.tempnam())
                 self.assertTrue(posix.tempnam(os.curdir))
                 self.assertTrue(posix.tempnam(os.curdir, 'blah'))
 
     def test_tmpfile(self):
         if hasattr(posix, 'tmpfile'):
+            with warnings.catch_warnings():
+                warnings.filterwarnings("ignore", "tmpfile", DeprecationWarning)
                 fp = posix.tmpfile()
                 fp.close()
 

Misc/NEWS

@@ -22,6 +22,9 @@ Core and Builtins
 Library
 -------
 
+- Issue #4662: os.tempnam(), os.tmpfile() and os.tmpnam() now raise a py3k
+  DeprecationWarning.
+
 - Subclasses of collections.OrderedDict now work correctly with __missing__.
 
 - Issue 10753 - Characters ';','=' and ',' in the PATH_INFO environment

Modules/posixmodule.c

@@ -7295,6 +7295,10 @@ posix_tempnam(PyObject *self, PyObject *args)
                    "tempnam is a potential security risk to your program") < 0)
         return NULL;
 
+    if (PyErr_WarnPy3k("tempnam has been removed in 3.x; "
+                       "use the tempfile module", 1) < 0)
+        return NULL;
+
 #ifdef MS_WINDOWS
     name = _tempnam(dir, pfx);
 #else
@@ -7319,6 +7323,10 @@ posix_tmpfile(PyObject *self, PyObject *noargs)
 {
     FILE *fp;
 
+    if (PyErr_WarnPy3k("tmpfile has been removed in 3.x; "
+                       "use the tempfile module", 1) < 0)
+        return NULL;
+
     fp = tmpfile();
     if (fp == NULL)
     return posix_error();
@@ -7342,6 +7350,10 @@ posix_tmpnam(PyObject *self, PyObject *noargs)
                    "tmpnam is a potential security risk to your program") < 0)
         return NULL;
 
+    if (PyErr_WarnPy3k("tmpnam has been removed in 3.x; "
+                       "use the tempfile module", 1) < 0)
+        return NULL;
+
 #ifdef USE_TMPNAM_R
     name = tmpnam_r(buffer);
 #else