Is it correct this way to inherit from a list?

[gialloporpora]

Hi all,
I would like to inherit from the list native class.
really I expected that was possible to use native list method without 
redefining them, for example the __repr__ method.

I don't know if i have made something wrong, this is my code (I obmit 
customized methods that I have added):

from os.path import exists

class vector(list):
	def __init__(self, *args):
		self._list = list(args)
		self._index = 0
	def __getitem__(self, key):
		return self._list[key]
		
	def __setitem__(self, key, value):
		self._list[key] = value
	def __len__(self):
		return len(self._list)
	def __iter__(self):
		return self
	def next(self):
		if self._index == len(self):
			self._index = 0
			raise StopIteration
		next = self._index
		self._index += 1
		return self[next

Is it correct or it exists another way to inherit from list class?


Sandro