Fix possible failure in pickling tests due to different instantiations
of the random module being around.
diff --git a/Lib/test/test_threaded_import.py b/Lib/test/test_threaded_import.py
index 5b96d87..6cedb96 100644
--- a/Lib/test/test_threaded_import.py
+++ b/Lib/test/test_threaded_import.py
@@ -27,6 +27,16 @@
class ThreadedImportTests(unittest.TestCase):
+ def setUp(self):
+ self.old_random = sys.modules.pop('random', None)
+
+ def tearDown(self):
+ # If the `random` module was already initialized, we restore the
+ # old module at the end so that pickling tests don't fail.
+ # See http://bugs.python.org/issue3657#msg110461
+ if self.old_random is not None:
+ sys.modules['random'] = self.old_random
+
def test_parallel_module_init(self):
if imp.lock_held():
# This triggers on, e.g., from test import autotest.