On Tue, Jan 6, 2009 at 10:53 AM, Aaron Swartz <[email protected]> wrote:
>
>> Of course they are, but if that's the case a function that returns to
>> you the value computed is probably of more interest:
>
> No, that's useless.
>
> The use case is you have a loop like
>
>    for x in manyitems:
>        timeconsumingprocess(x)
>
> and then you just get a blank line at your terminal for a while. You
> can change it to:
>
>    for x in yournamehere(manyitems):
>
> and then you get useful status updates.
>

Or maybe even better...

import sys
def map_progress(f, x):
    lenx = len(x)
    for n, y in enumerate(x):
        sys.stderr.write('\r%s/%s = %s' % (n, lenx, float(n)/lenx))
        yield f(y)

-- 
Andrew Gwozdziewycz
[email protected]
http://www.apgwoz.com  | http://www.photub.com

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