def selection(self, selop=None, items=None):
        return self.tk.call(self._w, "selection", selop, items)
Decorator for views that checks that the user is logged in, redirecting
dataset/ETHPy150Open francelabs/datafari/windows/python/Lib/lib-tk/ttk.py/Treeview.selection--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.2/django/contrib/auth/decorators.py/login_required