| f | def sizer(cls): | f | def sizer(cls): | 
            |  |  |  |  | 
            |  | def get_size(self): |  | def get_size(self): | 
            | n | if hasattr(self, '_size'): | n | if hasattr(self, '_custom_size'): | 
            |  | return self._size |  | return self._custom_size | 
            |  | if hasattr(self, '__len__'): |  | if hasattr(self, '__len__'): | 
            |  | return len(self) |  | return len(self) | 
            | n | if hasattr(self, '__abs__'): | n | elif hasattr(self, '__abs__'): | 
            |  | return abs(self) |  | return abs(self) | 
            | n |  | n | else: | 
            |  | return 0 |  | return 0 | 
            |  |  |  |  | 
            | n | def set_size(self, value): | n | def set_size(self, val): | 
            |  | self._size = value |  | self._custom_size = val | 
            |  |  |  |  | 
            |  | def del_size(self): |  | def del_size(self): | 
            | t | if hasattr(self, '_size'): | t | if hasattr(self, '_custom_size'): | 
            |  | del self._size |  | del self._custom_size | 
            |  | cls.size = property(get_size, set_size, del_size) |  | cls.size = property(get_size, set_size, del_size) | 
            |  | return cls |  | return cls |