# Boolean test switches that control whether a class variable of the metaclass
# is added to the dir() result.
# If the fix is not present, then enabling each one triggers the error
# behavior; If none of them is enabled, the error behavior is not triggered.
with_food = True      # Add the 'normal' class attribute 'food'
with_drink = True     # Add the property-based class attribute 'drink'

class FoodMeta(type):
    """Metaclass that adds its class attributes to dir() of classes using it."""

    food = 'ham'      # 'normal' class attribute
    
    @property
    def drink(cls):   # property-based class attribute
        return 'beer'

    def __dir__(cls):
        ret = [name for name in cls.__dict__] # the normal list
        if with_food:
            ret += ['food']
        if with_drink:
            ret += ['drink']
        print "bug2.FoodMeta.__dir__(): return=%s" % (repr(ret),)
        return ret

class Food(object):
    """docstring for Food class"""
    __metaclass__ = FoodMeta

    def diet(self):
        return "no!"

if __name__ == '__main__':
    print "bug2: Calling help(Food):"
    help(Food)