Convert list of tuples to list?

Question

How do I convert

[(1,), (2,), (3,)]

to

[1, 2, 3]

Answer 1

You can also unpack the tuple in the list comprehension:

e = [(1,), (2,), (3,)]
[i for (i,) in e]

will still give:

[1, 2, 3]