From 86a32cf12daac0c9ff24b50d187a61e63f5f5e38 Mon Sep 17 00:00:00 2001
From: chrisjbillington <chrisjbillington@gmail.com>
Date: Wed, 29 Jan 2020 11:14:58 -0500
Subject: [PATCH] bpo-38937: add test

---
 Lib/test/test_site.py | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Lib/test/test_site.py b/Lib/test/test_site.py
index 41c42299195..f7621a0674c 100644
--- a/Lib/test/test_site.py
+++ b/Lib/test/test_site.py
@@ -167,6 +167,14 @@ class HelperFunctionsTests(unittest.TestCase):
             if isinstance(path, str):
                 self.assertNotIn("abc\x00def", path)
 
+    def test_pth_exc_namespacing(self):
+        # Issue 38937
+        contents = "import sys; x = 5; [print(x + i) for i in range(5)]\n"
+        pth_dir, pth_fn = self.make_pth(contents)
+        with captured_stderr() as err_out:
+            self.assertFalse(site.addpackage(pth_dir, pth_fn, set()))
+        self.assertEqual(err_out.getvalue(), "")
+
     def test_addsitedir(self):
         # Same tests for test_addpackage since addsitedir() essentially just
         # calls addpackage() for every .pth file in the directory