Question

How can i get this

nums = [(0, 1), (1, 2), (2, 3), (3, 4), (4, 5), (5, 6), (6, 7), (7, 8)]

to this? The second item of each tuple is the first item of the next tuple.

[0, 1, 2, 3, 4, 5, 6, 7, 8]

I did:

>>> zip(*nums)[0]
(0, 1, 2, 3, 4, 5, 6, 7)

But it gives me everything except the last element and then i had to use some bad code to get it to the correct result so i was looking for an elegant solution.

Answer 1

Not sure what your general case is, but

[nums[0][0]] + [x[1] for x in nums]

For your example

range(nums[-1][-1] + 1)

also works, can you describe what you are trying to do rather than just giving one simple case?