James Mills wrote:
On Fri, Dec 19, 2008 at 8:18 AM, Martin Manns <mma...@gmx.net> wrote:
Hi:
Hi,
I am writing a spreadsheet application in Python
What's wrong with pyspread ?
[ ... snip ... ]
The dict that I tried out is of the type:
{(1,2,3): "2323", (1,2,545): "2324234", ... }
It is too slow for my application when it grows. One slicing operation
with list comprehensions takes about 1/2 s on my computer for 1E6
elements.
Let me get this straight.
It's taking 0.5s to slice your matrix
of 1E7 (10000000.0 rows/columns)
Are you mad ? This is TEN Millions and you
required it faster than 0.5s ?
No, 1E6, or ONLY 1 million. :-)
Am I missing something here ?
Would a matrix of matrices work better, ie a supermatrix where each
element is either a submatrix of cells or None if the submatrix is
empty? How much memory it would save would depend on how sparse the
matrix is.
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