Two-dimensional array tutorial?

Diez B. Roggisch deets at nospam.web.de
Wed Oct 22 16:05:07 CEST 2008


Martin Schneider wrote:

> Hi!
> 
> I'd like to handle two-dimensional arrays. My first choice, the numpy
> library, doesn't seem to be an option due to compatibility issues (see
> my other thread about python22.dll).
> 
> Is there a tutorial somewhere how to handle 2d-arrays with vanilla Python?

there isn't much to them, simply create an use:

foo = [[0 for _ in xrange(height)] for _ in xrange(width)]

or something similar. Then you just use

foo[x][y] 

to access individual elements.

Alternatively, you can use the module "array" for the inner list to be more
memory-efficient.

Obviously you don't get any further operations on arrays such as
transposition, multiplication and the like.

Can't you just get Numpy (or it's predecessors, Numeric) compiled against
ptyhon2.2?

Diez



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