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

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

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

    def __len__(self):
        return len(self._sequence)
    def __repr__(self):
        return repr(self._sequence)

class SortableView(ListView):
    __slots__ = ()

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

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