Add method to see if key exists

qt/applications/workbench/workbench/config/test/test_user.py

@@ -62,6 +62,12 @@ class ConfigUserTest(TestCase):
 
         self.assertEqual(True, self.cfg.get('main/bool_option2'))
 
+    def test_has_keys(self):
+        self.assertTrue(self.cfg.has('main', 'a_default_key'))
+        self.assertTrue(self.cfg.has('main/a_default_key'))
+        self.assertFalse(self.cfg.has('main', 'missing-key'))
+        self.assertFalse(self.cfg.has('main/missing-key'))
+
     # ----------------------------------------------
     # Failure tests
     # ----------------------------------------------

qt/applications/workbench/workbench/config/user.py

@@ -91,6 +91,14 @@ class UserConfig(object):
         else:
             return value
 
+    def has(self, option, second=None):
+        """Return a True if the key exists in the
+        settings. ``config.get('main', 'window/size')`` and
+        ``config.get('main/window/size')`` are equivalent.
+        """
+        option = self._check_section_option_is_valid(option, second)
+        return option in self.all_keys()
+
     def set(self, option, value, extra=None):
         """Set a value for an option in a given section. Can either supply
         the fully qualified option or add the section as an additional