range() is not the best way to check range?
Grant Edwards
grante at visi.com
Tue Jul 18 00:13:05 EDT 2006
On 2006-07-18, Summercoolness at gmail.com <Summercoolness at gmail.com> wrote:
> it seems that range() can be really slow:
>
> the following program will run, and the last line shows how long it ran
> for:
>
> import time
>
> startTime = time.time()
>
> a = 1.0
> for i in range(0, 30000):
> if i in range (0, 10000):
> a += 1
> if not i % 1000: print i
>
> print a, " ", round(time.time() - startTime, 1), "seconds"
> or is there an alternative use of range() or something similar that can
> be as fast?
Creating and then searching a 10,000 element list to see if a
number is between two other numbers is insane.
Using xrange as somebody else suggested is also insane.
If you want to know if a number is between two other numders,
for pete's sake use the comparison operator like god intended.
if 0 <= i <= 10000:
--
Grant Edwards grante Yow! ANN JILLIAN'S HAIR
at makes LONI ANDERSON'S
visi.com HAIR look like RICARDO
MONTALBAN'S HAIR!
More information about the Python-list
mailing list