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

cclauss · vstinner · commit a0bb51e44cd4 · 2019-01-06T23:10:55.000+01:00
diff --git 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

Original file line number	Diff line number	Diff line change
`@@ -1,3 +1,4 @@`
	`1`	`+import sys`
`1`	`2`	`import unittest`
`2`	`3`	`from doctest import DocTestSuite`
`3`	`4`	`from test import support`