Python is slow?

Grant Edwards grante at
Tue Sep 23 15:57:14 CEST 2008

On 2008-09-23, sturlamolden <sturlamolden at> wrote:


> After having a working Python prototype, I resorted to rewrite the
> program in C++. The Python prototype took an hour to make, debug and
> verify. The same thing in C++ took me almost a day to complete, even
> with a working prototype as model. To my surprise, the resulting beast
> of C++ required 64.3 seconds to construct the same kd-tree. Searching
> the tree was not faster either, 1,000 points required 38.8 seconds. I
> wasted a day, only to find my Python prototype being the faster.
> We may conclude that I'm bad at programming C++,

AFAICT, _everybody_ is bad at programming C++.

One begins to suspect it's not the fault of the programmers.

Grant Edwards                   grante             Yow! Finally, Zippy
                                  at               drives his 1958 RAMBLER
                                 METROPOLITAN into the
                                                   faculty dining room.

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