bpo-35133: Fix mistakes when concatenate string literals on different lines. (GH-10284)


Two kind of mistakes:

1. Missed space. After concatenating there is no space between words.

2. Missed comma. Causes unintentional concatenating in a list of strings.
(cherry picked from commit 34fd4c20198dea6ab2fe8dc6d32d744d9bde868d)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
diff --git a/Lib/test/test_builtin.py b/Lib/test/test_builtin.py
index e7202cd..7c9768a 100644
--- a/Lib/test/test_builtin.py
+++ b/Lib/test/test_builtin.py
@@ -1600,7 +1600,7 @@
     @unittest.skipIf(sys.flags.ignore_environment, '-E was given')
     def test_envar_unimportable(self):
         for envar in (
-                '.', '..', '.foo', 'foo.', '.int', 'int.'
+                '.', '..', '.foo', 'foo.', '.int', 'int.',
                 'nosuchbuiltin',
                 'nosuchmodule.nosuchcallable',
                 ):