Is there a nice Pythonic way to loop over a list, retuning a pair of elements? The last element should be paired with the first.
So for instance, if I have the list [1, 2, 3], I would like to get the following pairs:
A Pythonic way to access a list pairwise is:
zip(L, L[1:]). To connect the last item to the first one:
>>> L = [1, 2, 3] >>> zip(L, L[1:] + L[:1]) [(1, 2), (2, 3), (3, 1)]