Hello,
This is a question for the best method (in terms of performance
only) to choose a random element from a list among those that satisfy
a certain property.
This is the setting: I need to pick from a list a random element
that satisfies a given property. All or none of the elements may h
> Caching might help.
>
> If random_pick is called several times with the same list(s) then
> cache the result of
> [property(i) for i in a_list] against a_list.
>
> If random_pick is called several times with list(s) with multiple
> instances of list items then cache
> property(i) against i for
On Jan 5, 5:07 pm, [EMAIL PROTECTED] wrote:
> Hello, Paul and Arnaud.
> While I think about your answers: do you think there is any way to
> avoid shuffle?
> It may take unnecessary long on a long list most of whose elements
> have the property.
Umm...
You provide nice answers in the case many ele
Hello, Paul and Arnaud.
While I think about your answers: do you think there is any way to
avoid shuffle?
It may take unnecessary long on a long list most of whose elements
have the property.
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On Jan 5, 9:50 pm, Paul Hankin <[EMAIL PROTECTED]> wrote:
> On Jan 5, 5:12 pm, Paul Hankin <[EMAIL PROTECTED]> wrote:
>
>
>
> > On Jan 5, 4:14 pm, [EMAIL PROTECTED] wrote:
>
> > > On Jan 5, 5:07 pm, [EMAIL PROTECTED] wrote:
>
> > > > Hello, Paul and Arnaud.
> > > > While I think about your answers:
>
> ...where the image data is loaded into a numpy array
> (1600x1200x3)...
One comment: that is a big array, too big for the cache memory. I know
that in these cases it makes a difference how many times the slices of
the array are loaded and unloaded from RAM onto cache. One issue is
that a 2D a
> Just for fun, I profiled my answer versus the final answer...
This mailing list is awesome!
PS:ajaksu, I have to leave now, I hope bukzor's answer was enough to
you (at least for the moment)
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Your project interests me. Actually I was thinking about doing the
same. I hadn't worked on it at all, but I though about it and had the
idea about reading the session namespace directly, which I though
would be stored in the __dict__ attribute of something.
After reading your post, I have bee
I meant it prints 4, which means the value of test is modified by the
access to the dict
> test=5
> __IPYTHON__.user_ns['test']=4
> print test #prints 4
>
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Have you seen this page?
http://matplotlib.sourceforge.net/screenshots.html
On watching this, I wouldn't say matplotlib is inferior to matlab
plotting. Also, I don't know what they use in sage, but they have 3D
plots of surfaces that you can rotate with the mouse.
Do as you like, but if
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