On Mon, Sep 24, 2012 at 7:44 AM, jimbo1qaz <jimmyli1...@gmail.com> wrote: > On Sunday, September 23, 2012 2:31:48 PM UTC-7, jimbo1qaz wrote: >> I have a nested list. Whenever I make a copy of the list, changes in one >> affect the other, even when I use list(orig) or even copy the sublists one >> by one. I have to manually copy each cell over for it to work. >> >> Link to broken code: http://jimbopy.pastebay.net/1090401 > > No, actually that's the OK code. http://jimbopy.pastebay.net/1090494 is the > broken one.
The first thing I'd change about that code is the whole thing of using try/exec/except to suppress IndexError. Definitely not good code. I'm not wholly certain, but I think you might run into weird issues with negative OOBounds indices (since Python treats a negative list index as counting from the far end). This is nothing to do with your originally requested issue, which I can't see the cause of in your script there. But when you assign a list, you just get another reference to the same list. ChrisA -- http://mail.python.org/mailman/listinfo/python-list
