Is there an easy way to get a list comprehension to produce a flat list of, say, [x,2*x] for each input argument?
E.g., I'd like to do something like: [ [x,2*x] for x in range(4) ] ...and receive [ 0,0,1,2,2,4,3,6] ...but of course you really get a list of lists: [[0, 0], [1, 2], [2, 4], [3, 6]] I'm aware I can use any of the standard "flatten" bits of code to turn this back into what I want, but I was hoping there's some way to avoid the "lists of lists" generation in the first place? A slightly similar problem: If I want to "merge," say, list1=[1,2,3] with list2=[4,5,6] to obtain [1,4,2,5,3,6], is there some clever way with "zip" to do so? Thanks, ---Joel -- http://mail.python.org/mailman/listinfo/python-list
