On Tue, 05 Jan 2010 00:52:56 +0000, r0g wrote: > I'd be strongly inclined to think the result would be the sequence on > the left with the data from the second sequence appended to it. What's > wrong with a little duck typing here eh?
That's not the existing behaviour. List concatenation doesn't mutate the left hand list, it creates a new list: >>> L = [1, 2, 3] >>> L2 = L + [4, 5, 6] >>> L [1, 2, 3] >>> L2 [1, 2, 3, 4, 5, 6] But if you insist on in-place modification, why do you prefer appending the right hand sequence to the left instead of prepending the left hand sequence to the right? -- Steven -- http://mail.python.org/mailman/listinfo/python-list
