On May 15, 5:08 pm, Gabriel <[EMAIL PROTECTED]> wrote: > Hi all > > Just wondering if someone could clarify this behaviour for me, please? > > >>> tasks = [[]]*6 > >>> tasks > > [[], [], [], [], [], []]>>> tasks[0].append(1) > >>> tasks > > [[1], [1], [1], [1], [1], [1]] > > Well what I was expecting to end up with was something like: > >>> tasks > [[1], [], [], [], [], []] > > I got this example from page 38 of Beginning Python. > > Regards > > Gabriel
As a complementary note, if you want to copy a list (probably a filled one instead of blank ones like here) and wanted to copy a list so that the new copy is a completely separate instance from the old copy, you may use deepcopy (from copy import deepcopy). -- http://mail.python.org/mailman/listinfo/python-list