В Mon, 10 Oct 2011 11:20:08 -0400
Olivier Delalleau <sh...@keba.be> пишет:
>
> The following doesn't use numpy but seems to be about 20x faster:
>
> A_rows = {}
> for i, row in enumerate(A):
> A_rows[tuple(row)] = i
> for i, row in enumerate(B):
> C[i] = A_rows.get(tuple(row), -1)
>
> -=- Olivier
Thanks a lot, Olivier, that's makes my program like 3x faster.
One lesson I can draw from this - don't try to use NumPy in
situations it doesn't fit :)
WBR,
Andrey
--
Researcher,
General and theoretical physics dept., South Ural State University
454080, Pr. Lenina, 76, Chelyabinsk, Russia
Tel: +7 351 265-47-13
and...@physics.susu.ac.ru
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