built in zip function speed
mart.franklin at gmail.com
mart.franklin at gmail.com
Tue Jul 4 10:59:30 EDT 2006
Rune Strand wrote:
> itertools.izip is usually faster than zip. You can try that.
Thanks very much
timing for itertools.izip
for av, bv, cv, dv in itertools.izip(a, b, c, d):
avbv = (av-bv) * (av - bv)
diff = cv - dv
e.append(diff - avbv)
on a 4 million element aray:
slice:
8.06299996376
built in zip:
36.5169999599
myzip:
12.0320000648
izip:
5.76499986649
so fastest overall
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