[3.11] gh-89392: Fix running test_pep646_syntax as script (GH-108875) (GH-108877)

miss-islington · serhiy-storchaka · web-flow · commit 562c16885656 · 2023-09-05T06:41:15.000Z
(cherry picked from commit f3b6608) Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
diff --git a/Lib/test/test_pep646_syntax.py b/Lib/test/test_pep646_syntax.py
@@ -1,4 +1,5 @@
 import doctest
+import unittest
 
 doctests = """
 
