I got it! It can do like [i for i in x for y in range(2)]
On Wed, Aug 7, 2013 at 4:50 PM, liuerfire Wang <liuerf...@gmail.com> wrote: > Sorry for the title which didn't make clear. > > Here is a list x = [b, a, c] (a, b, c are elements of x. Each of them are > different type). Now I wanna generate a new list as [b, b, a, a, c, c]. > > I know we can do like that: > > tmp = [] > for i in x: > tmp.append(i) > tmp.append(i) > > However, I wander is there a more beautiful way to do it, like [i for i in > x]? > > Thanks. > > > -- > Best regards. > /********************************** > google+: +liuerfire <http://gplus.to/onepiece> twitter: > @liuerfire<https://twitter.com/#!/liuerfire> > 蛋疼不蛋疼的都可以试着点一下~^_^~ <http://db.tt/YGEdRM0> > ***********************************/ > > -- Best regards. /********************************** google+: +liuerfire <http://gplus.to/onepiece> twitter: @liuerfire<https://twitter.com/#!/liuerfire> 蛋疼不蛋疼的都可以试着点一下~^_^~ <http://db.tt/YGEdRM0> ***********************************/
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