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Groups > comp.lang.python > #29877
| Date | 2012-09-23 18:56 -0600 |
|---|---|
| From | "Littlefield, Tyler" <tyler@tysdomain.com> |
| Subject | Re: List Problem |
| References | <5126348a-8e87-493d-975c-d6273e59784c@googlegroups.com> <b6555e91-54ba-42fb-bd99-561cb971c2ce@googlegroups.com> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.1171.1348448230.27098.python-list@python.org> (permalink) |
On 9/23/2012 3:44 PM, jimbo1qaz 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. I've not been following this thread fully, but why not just use x=list(y) to copy the list? The issue is that when you assign i=[1,2,3] and then j = i, j is just a reference to i, which is why you change either and the other changes. -- Take care, Ty http://tds-solutions.net The aspen project: a barebones light-weight mud engine: http://code.google.com/p/aspenmud He that will not reason is a bigot; he that cannot reason is a fool; he that dares not reason is a slave.
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List Problem jimbo1qaz <jimmyli1528@gmail.com> - 2012-09-23 14:31 -0700
Re: List Problem jimbo1qaz <jimmyli1528@gmail.com> - 2012-09-23 14:44 -0700
Re: List Problem Chris Angelico <rosuav@gmail.com> - 2012-09-24 07:57 +1000
Re: List Problem Dave Angel <d@davea.name> - 2012-09-23 18:03 -0400
Re: List Problem Chris Angelico <rosuav@gmail.com> - 2012-09-24 08:27 +1000
Re: List Problem Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-09-23 22:37 +0000
Re: List Problem Chris Angelico <rosuav@gmail.com> - 2012-09-24 08:45 +1000
Re: List Problem Chris Angelico <rosuav@gmail.com> - 2012-09-24 08:30 +1000
Re: List Problem "Littlefield, Tyler" <tyler@tysdomain.com> - 2012-09-23 18:56 -0600
Re: List Problem Chris Angelico <rosuav@gmail.com> - 2012-09-24 11:52 +1000
Re: List Problem Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-09-23 22:07 +0000
Re: List Problem jimbo1qaz <jimmyli1528@gmail.com> - 2012-09-23 15:44 -0700
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