only clear a module's __dict__ if the module is the only one with a reference to it #7140
diff --git a/Lib/test/test_module.py b/Lib/test/test_module.py
index 80d440d..638f55b 100644
--- a/Lib/test/test_module.py
+++ b/Lib/test/test_module.py
@@ -55,6 +55,14 @@
{"__name__": "foo", "__doc__": "foodoc", "bar": 42})
self.assertTrue(foo.__dict__ is d)
+ def test_dont_clear_dict(self):
+ # See issue 7140.
+ def f():
+ foo = ModuleType("foo")
+ foo.bar = 4
+ return foo
+ self.assertEqual(f().__dict__["bar"], 4)
+
def test_main():
run_unittest(ModuleTests)