Hmm.. thanks. I did this changes, but without any performance profits.
Matimus wrote:
> Using the '+' operator for string concatonation can be slow, especially
> when done many times in a loop.
>
>
>> pi = pi + str("%04d" % int(e + d/a)) ## this should be fast?! I dont
>
>
> The accepted solution would be to make pi an array and append to the
> end...
>
> pi = [] #create the array (empty)
> ...
> ...
> pi.append(str("%04d"%int(e+d/a))) # append to it
>
> And when it is time to print the results do the following:
>
> print "".join(pi)
>
> It may look strange, but it is a common Python idiom. You might also
> look into an optimizer such as psycho: http://psyco.sourceforge.net/.
>
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