comment:

just one more comment to make a clear distiction between updating the keywords and deleting them.

myFig.py

@@ -95,8 +95,9 @@ class MyFig_base(Figure):
         # update the keywords with there values
         if hasattr(self, "keywords") :
             self.update(**kwargs)
-            for key in self.keywords.keys() :
-                kwargs.pop(key, None)                                    # remove key if exists
+            # remove key if exists
+            for keyword in self.keywords.keys() :
+                kwargs.pop(keyword, None)
         else:
             self.keywords = {}