--- a/tests/tools/check_source.sh	Wed Oct 10 10:26:27 2018 +0300
+++ b/tests/tools/check_source.sh	Wed Oct 10 10:32:57 2018 +0300
@@ -363,6 +363,7 @@
     enable=$enable,W1659          # (xreadlines-attribute) Accessing a removed xreadlines attribute
     enable=$enable,W1607          # (file-builtin) file built-in referenced
     enable=$enable,W1606          # (execfile-builtin) execfile built-in referenced
+    enable=$enable,W1629          # (nonzero-method) __nonzero__ method defined
     # enable=
 
     options=