A Faster Way...

[Fredrik Lundh]

andrea.gavana at agip.it wrote:

> If I simplify the problem, suppose I have 2 lists like:
>
> a = range(10)
> b = range(20,30)
>
> What I would like to have, is a "union" of the 2 list in a single tuple. In
> other words (Python words...):
>
> c = (0, 20, 1, 21, 2, 22, 3, 23, 4, 24, 5, 25, .....
>
> and so on.

here are some alternatives:

    c = sum(zip(range(10), range(20, 30)), ())

or

    c = []
    [c.extend(x) for x in zip(range(10), range(20, 30))]
    c = tuple(c)

or

    from _tkinter import _flatten
    c = _flatten(zip(range(10), range(20, 30)))

(timeit is your friend)

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