Python 2 times slower than Perl

Christopher A. Craig com-nospam at
Fri Jul 20 03:24:22 CEST 2001

bokr at (Bengt Richter) wrote in message news:<3b550e40.2201271731 at>...
> Well rare, but not always dumb, I think. If you're only using a constant 
> in one place that happens to be in a loop, and the clearest way to express 
> it is as a constant expresssion, you do it that way when you know it's going
> to be folded. E.g., compare (5280.0/60.0*60.0) vs 1.4666667 -- which would 
> you feel surer about, reviewing the code, given the same comment saying
> mph->fps?
> Of course, with Python it would be dumb not to move it out of the loop, if
> you could save significant execution time.

Or worse I frequently need things like (1L<<1024)-1, and though I know my
powers of two quite well, I don't think I'd immediately recognize that one 

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