#!/usr/local/bin/python2
from collections import Mapping, Sequence

class ListView(Sequence):
    __slots__ = ('_sequence')
    
    def __init__(self, target):
        self._target = target

    def __getitem__(self, index):
        return self._target[index]

    def __len__(self):
        return len(self._target)

    def __repr__(self):
        return '%s(%s)' % (type(self).__name__, self._target)


class SortableView(ListView):
    __slots__ = ()

    def sort(*args, **kwargs):
        args[0]._target.sort(*args[1:], **kwargs)

v = SortableView([14,7,2,8,])
v.sort()
print str(v)