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Groups > comp.lang.python > #11746
| Date | 2011-08-18 07:45 -0500 |
|---|---|
| From | Tim Chase <python.list@tim.thechases.com> |
| Subject | Re: lists and for loops |
| References | <a47fc507-4e45-4a1d-b133-10a6bd2095f3@c14g2000yqk.googlegroups.com> <b599dd9d-0533-44ef-9bb5-8ce2db4760e8@m5g2000prh.googlegroups.com> <8307c651-e4c1-4d28-9f2a-bf0513f21eb8@glegroupsg2000goo.googlegroups.com> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.154.1313671526.27778.python-list@python.org> (permalink) |
On 08/18/2011 07:22 AM, Mark Niemczyk wrote: > Or, using list comprehension. > >>>> numbers = [1, 2, 3, 4, 5] >>>> numbers = [n + 5 for n in numbers] >>>> numbers > [6, 7, 8, 9, 10] Or, if you want it in-place: numbers[:] = [n+5 for n in numbers] which makes a difference if you have another reference to numbers: >>> numbers = [1,2,3,4,5] >>> digits = numbers >>> numbers = [n+5 for n in numbers] >>> numbers, digits ([6, 7, 8, 9, 10], [1, 2, 3, 4, 5]) >>> numbers = [1,2,3,4,5] >>> digits = numbers >>> numbers[:] = [n+5 for n in numbers] >>> numbers, digits ([6, 7, 8, 9, 10], [6, 7, 8, 9, 10]) -tkc
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lists and for loops Emily Anne Moravec <moravec@stolaf.edu> - 2011-08-17 20:08 -0700
Re: lists and for loops alex23 <wuwei23@gmail.com> - 2011-08-17 20:23 -0700
Re: lists and for loops Mark Niemczyk <prahamark@gmail.com> - 2011-08-18 05:22 -0700
Re: lists and for loops Tim Chase <python.list@tim.thechases.com> - 2011-08-18 07:45 -0500
Re: lists and for loops Peter Pearson <ppearson@nowhere.invalid> - 2011-08-18 16:43 +0000
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