diff -r 6811021e3d94 -r 614396cbffbf tests/tools/check_source.sh
--- a/tests/tools/check_source.sh	Thu Oct 05 16:46:29 2017 +0300
+++ b/tests/tools/check_source.sh	Fri Oct 06 17:52:34 2017 +0300
@@ -217,10 +217,10 @@
     enable=$enable,E0102          # (function-redefined) method already defined
     enable=$enable,W0602          # (global-variable-not-assigned) Using global for 'X' but no assignment is done
     enable=$enable,W0612          # (unused-variable) Unused variable 'X'
+    enable=$enable,W0611          # (unused-import), Unused import connectors
 
     # enable=$enable,W0403        # relative import
     # enable=$enable,W0622        # (redefined-builtin) Redefining built-in
-    # enable=$enable,W0612        # unused-variable
     # enable=$enable,C1001        # (old-style-class) Old-style class defined. Problem with PyJS
     # enable=