class Chain(object):
    def __init__(self,path=''):
        self._path=path

    def __getattr__(self,attr):
        return Chain('%s/%s'%(self._path,attr))

    def __str__(self):
        return self._path

    def users(self,username):
        return Chain('%s/%s/%s'%(self._path,'users',username))

    __repr__=__str__

print(Chain().status.user.timeline)
print(Chain().users('Oteramn').timeline)