How to use the attrs.UnicodeAttr function in attrs

def __init__(self,padding=5,**kwargs):
		super(HBox,self).__init__(**kwargs)
		self.padding = padding

class Window(VBoxLayoutMixin,Container):
	"""
	A L{VBox} with a draggable title bar aka a window

	New Attributes
	==============

	  - title: The Caption of the window
	  - titlebar_height: The height of the window title bar
	"""

	ATTRIBUTES = Container.ATTRIBUTES + [ UnicodeAttr('title'), IntAttr('titlebar_height') ]

	def __init__(self,title=u"title",titlebar_height=0,**kwargs):
		super(Window,self).__init__(_real_widget = fife.Window(), **kwargs)
		if titlebar_height == 0:
			titlebar_height = self.real_font.getHeight() + 4
		self.titlebar_height = titlebar_height
		self.title = title

		# Override explicit positioning
		self.position_technique = "automatic"


	def _getTitle(self): return _gui2text(self.real_widget.getCaption())
	def _setTitle(self,text): self.real_widget.setCaption(_text2gui(text))
	title = property(_getTitle,_setTitle)

class TextField(Widget):
	"""
	An editable B{single line} text edit widget.

	New Attributes
	==============

	  - text: The text in the TextBox.

	Data
	====
	The text can be read and set via L{distributeData} and L{collectData}.
	"""

	ATTRIBUTES = Widget.ATTRIBUTES + [UnicodeAttr('text')]

	def __init__(self,text=u"", **kwargs):
		self.real_widget = fife.TextField()
		self.text = text
		super(TextField,self).__init__(**kwargs)

		# Prepare Data collection framework
		self.accepts_data = True
		self.accepts_inital_data = True
		self._realSetInitialData = self._setText
		self._realSetData = self._setText
		self._realGetData = self._getText

	def resizeToContent(self,recurse=True):
		max_w = self.real_font.getWidth(self.text)
		self.width = max_w

widget.position = (10, posi[1])

	Here they are.

	   - x: Integer: The horizontal part of the position attribute.
	   - y: Integer: The vertical part of the position attribute.
	   - width: Integer: The horizontal part of the size attribute.
	   - height: Integer: The vertical part of the size attribute.

	"""

	ATTRIBUTES = [ Attr('name'), PointAttr('position'),
		PointAttr('min_size'), PointAttr('size'), PointAttr('max_size'),
		ColorAttr('base_color'),ColorAttr('background_color'),ColorAttr('foreground_color'),ColorAttr('selection_color'),
		Attr('style'), Attr('font'),IntAttr('border_size'),Attr('position_technique'),
		UnicodeAttr('helptext')
		]

	DEFAULT_NAME = '__unnamed__'

	HIDE_SHOW_ERROR = """\
		You can only show/hide the top widget of a hierachy.
		Use 'addChild' or 'removeChild' to add/remove labels for example.
		"""

	def __init__(self,parent = None, name = DEFAULT_NAME,
				 size = (-1,-1), min_size=(0,0), max_size=(5000,5000),
				 helptext=u"",
				 style = None, **kwargs):

		assert( hasattr(self,'real_widget') )
		self.event_mapper = events.EventMapper(self)