Use convenience method.

Author: aparajita

linter.py

@@ -52,7 +52,7 @@ def check(self, code, filename):
 
         self.build_options(options, type_map, transform=lambda s: s.replace('-', '_'))
 
-        if persist.settings.get('debug'):
+        if persist.debug_mode():
             persist.printf('{} options: {}'.format(self.name, options))
 
         checker = self.module.StyleGuide(**options)