gh-89392: Fix running test_pep646_syntax as script (GH-108875)

serhiy-storchaka · web-flow · commit f3b6608ba2b1 · 2023-09-04T15:24:03.000+03:00
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 = """
 
