python references

[dustin.getz at gmail.com]

>>> from Numeric import zeros
>>> p=zeros(3)
>>> p
array([0,0,0])
>>> p[0]
0
>>> x=p[0]
>>> x=10
>>> p
array([0,0,0]) #actual behavior
#array([10,0,0]) #desired behavior

I want x to be a C++-esque reference to p[0] for convenience in a
vector3 class.  i dont want accessor methods.  i know python can do
this, but it's been a long time since I used it and am unsuccessful in
my googling and docreading.  a little help please?