Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > comp.lang.python > #9307

Re: Python bug? Indexing to matrices

From Ben Finney <ben+python@benfinney.id.au>
Newsgroups comp.lang.python
Subject Re: Python bug? Indexing to matrices
References <394aae4f-92ac-406e-bd44-2d2bd3debd91@l1g2000yql.googlegroups.com>
Date 2011-07-12 15:59 +1000
Message-ID <87sjqcdoo0.fsf@benfinney.id.au> (permalink)
Organization Unlimited download news at news.astraweb.com

Show all headers | View raw


David <davidbtdt@gmail.com> writes:

> Should the following line work for defining a matrix with zeros?
>
> c= [[0]*col]*row

No. Python lists are not matrixes and are not arrays.

If you want good implementations of arrays and matrices, use NumPy
<URL:http://numpy.scipy.org/>.

-- 
 \      “Properly read, the Bible is the most potent force for atheism |
  `\                                    ever conceived.” —Isaac Asimov |
_o__)                                                                  |
Ben Finney

Back to comp.lang.python | Previous | NextPrevious in thread | Next in thread | Find similar | Unroll thread


Thread

Python bug? Indexing to matrices David <davidbtdt@gmail.com> - 2011-07-11 22:39 -0700
  Re: Python bug? Indexing to matrices Chris Rebert <clp2@rebertia.com> - 2011-07-11 22:44 -0700
  Re: Python bug? Indexing to matrices Ben Finney <ben+python@benfinney.id.au> - 2011-07-12 15:59 +1000
  Re: Python bug? Indexing to matrices sturlamolden <sturlamolden@yahoo.no> - 2011-07-12 05:59 -0700
    Re: Python bug? Indexing to matrices sturlamolden <sturlamolden@yahoo.no> - 2011-07-12 06:03 -0700
    Re: Python bug? Indexing to matrices David <davidbtdt@gmail.com> - 2011-07-12 06:23 -0700

csiph-web