Order in metaclass

[Nicolas Fleury]

In the following example:

class MyMetaclass(type): pass
class MyBaseType(object): __metaclass__ = MyMetaclass
class MyType(MyBaseType):
     x = 4
     y = 5
     z = 6

Is there any way to modify MyMetaclass to keep the order of x,y,z somewhere?

Thx and regards,
Nicolas