Issue #18571: Implementation of the PEP 446: file descriptors and file handles

are now created non-inheritable; add functions os.get/set_inheritable(),
os.get/set_handle_inheritable() and socket.socket.get/set_inheritable().

1 files changed, 10 insertions, 1 deletions

diff --git a/Lib/test/test_devpoll.py b/Lib/test/test_devpoll.py
index 167e0ee..40ebeee 100644
--- a/Lib/test/test_devpoll.py
+++ b/Lib/test/test_devpoll.py
@@ -2,7 +2,11 @@
 
 # Initial tests are copied as is from "test_poll.py"
 
-import os, select, random, unittest, sys
+import os
+import random
+import select
+import sys
+import unittest
 from test.support import TESTFN, run_unittest
 
 try:
@@ -111,6 +115,11 @@ class DevPollTests(unittest.TestCase):
         self.assertRaises(ValueError, devpoll.register, fd, fd, select.POLLIN)
         self.assertRaises(ValueError, devpoll.unregister, fd)
 
+    def test_fd_non_inheritable(self):
+        devpoll = select.devpoll()
+        self.addCleanup(devpoll.close)
+        self.assertEqual(os.get_inheritable(devpoll.fileno()), False)
+
 
 def test_main():
     run_unittest(DevPollTests)