test_threading_local: add missing "import sys" (GH-8049)

diff --git a/Lib/test/test_threading_local.py b/Lib/test/test_threading_local.py
index 984f8dda37438433b4ad17ca62d7a3f62f60ebf9..2fd14ae2e16f3d0b506237bb009e7d7f9c355b58 100644 (file)
--- a/Lib/test/test_threading_local.py
+++ b/Lib/test/test_threading_local.py
@@ -1,3 +1,4 @@
+import sys
 import unittest
 from doctest import DocTestSuite
 from test import support