On Fri, Jun 3, 2011 at 3:53 PM, Gabriel <snoopy.6...@googlemail.com> wrote: > But still, is this solution really faster or better than the one using > list comprehension and the expression 'x*x'?
No, not really. >c:\python32\python -m timeit -s "coords = list(range(100))" -s "from math >import hypot" -s "from functools import reduce" "reduce(hypot, coords, 0)" 10000 loops, best of 3: 53.2 usec per loop >c:\python32\python -m timeit -s "coords = list(range(100))" -s "from math >import sqrt, fsum" "sqrt(fsum(x*x for x in coords))" 10000 loops, best of 3: 32 usec per loop >c:\python32\python -m timeit -s "coords = list(range(100))" -s "from math >import sqrt" "sqrt(sum(x*x for x in coords))" 100000 loops, best of 3: 14.4 usec per loop -- http://mail.python.org/mailman/listinfo/python-list
