Accessing next/prev element while for looping

[Joseph Garvin]

When I first came to Python I did a lot of C style loops like this:

for i in range(len(myarray)):
    print myarray[i]

Obviously the more pythonic way is:

for i in my array:
    print i

The python way is much more succinct. But a lot of times I'll be looping 
through something, and if a certain condition is met, need to access the 
previous or the next element in the array before continuing iterating. I 
don't see any elegant way to do this other than to switch back to the C 
style loop and refer to myarray[i-1] and myarray[i+1], which seems 
incredibly silly given that python lists under the hood are linked 
lists, presumably having previous/next pointers although I haven't 
looked at the interpeter source.

I could also enumerate:

for i, j in enumerate(myarray):
    print myarray[i], j # Prints each element twice

And this way I can keep referring to j instead of myarray[i], but I'm 
still forced to use myarray[i-1] and myarray[i+1] to refer to the 
previous and next elements. Being able to do j.prev, j.next seems more 
intuitive.

Is there some other builtin somewhere that provides better functionality 
that I'm missing?