Iterate over all pairs of consecutive items in a list

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Given a list

l = [1, 7, 3, 5]

I want to iterate over all pairs of consecutive list items (1,7), (7,3), (3,5), i.e.

for i in xrange(len(l) - 1):
    x = l[i]
    y = l[i + 1]
    # do something

I would like to do this in a more compact way, like

for x, y in someiterator(l): ...

Is there a way to do do this using builtin Python iterators? I"m sure the itertools module should have a solution, but I just can"t figure it out.

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