Chris Angelico wrote: > On Sun, Feb 10, 2013 at 10:29 PM, Steven D'Aprano > <steve+comp.lang.pyt...@pearwood.info> wrote: >> "inserted" is called addition, together with list slicing when needed. >> >> newlist = [item_to_insert] + oldlist >> newlist = oldlist[0:5] + [item_to_insert] + oldlist[5:] > > Really? Wouldn't it be easier to use slice assignment on a copy? > > newlist = oldlist[:]; newlist[pos:pos] = [item_to_insert]
I don't know about "easier", but it's two statements rather than a single expression, which means you cannot easily include it as part of a larger expression. > Actually, come to think of it, that scores about the same on > readability. Six of one, half dozen of the other. Pretty much. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
