options.py

class BasketBase(type):
    def __new__(mcs, classname, bases, class_dict):
        class_dict['actions'] = {}
        class_dict['basketactions'] = {}
        for elem in class_dict:
            if elem.startswith("action_"):
                class_dict['actions'][elem.replace("action_","")] = class_dict[elem]
            if elem.startswith("basketaction_"):
                class_dict['basketactions'][elem.replace("basketaction_","")] = class_dict[elem]
        for elem in class_dict.keys():
            if elem.startswith("action_") or elem.startswith("basketaction_"):
                del class_dict[elem]
        return type.__new__(mcs, classname, bases, class_dict)


class Basket(object):
    __metaclass__ = BasketBase
    
    def action_remove(self):
        pass

# now:
# > Basket.actions
# {'remove': <function action_remove at 0x1946410>}

# but:

class MyFavoritesBasket(Basket):
     def action_blah(self):
         pass

# > MyFavoritesBasket.actions
# {'blah': <function action_blah at 0x1c1b2a8>}

# why no 'remove' also???