diff -r 922f0d84f869 -r 1c04a50dc7ff tests/tools/check_source.sh
--- a/tests/tools/check_source.sh	Wed Oct 10 10:50:00 2018 +0300
+++ b/tests/tools/check_source.sh	Thu Oct 11 09:41:15 2018 +0300
@@ -366,6 +366,7 @@
     enable=$enable,W1629          # (nonzero-method) __nonzero__ method defined
     enable=$enable,W1602          # (basestring-builtin) basestring built-in referenced
     enable=$enable,W1646          # (invalid-str-codec) non-text encoding used in str.decode
+    enable=$enable,W1645          # (exception-message-attribute) Exception.message removed in Python 3
     # enable=
 
     options=