def __call__(self, wx_item=None):
if wx_item is not None:<EOL><INDENT>key = self._tree_view.wx_obj.GetPyData(wx_item)<EOL>return self[key]<EOL><DEDENT>else:<EOL><INDENT>return self.items()<EOL><DEDENT>
Look for a item based on the wx_item or return a key/value pair